|
|
ARM Microcontrollers - MCU 32MHz Arm Cortex-M0+ MCU with 64KB dual-
- MSPM0L1116SPTR
- Texas Instruments
-
1:
$3.97
-
800In Stock
-
New Product
|
Mouser Part No
595-MSPM0L1116SPTR
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU 32MHz Arm Cortex-M0+ MCU with 64KB dual-
|
|
800In Stock
|
|
|
$3.97
|
|
|
$2.57
|
|
|
$2.33
|
|
|
$1.96
|
|
|
$1.40
|
|
|
View
|
|
|
$1.85
|
|
|
$1.62
|
|
|
$1.32
|
|
|
$1.29
|
|
Min.: 1
Mult.: 1
:
1,000
|
|
|
MSPM0L1116
|
SMD/SMT
|
LQFP-48
|
ARM Cortex M0+
|
64 kB
|
|
12 bit
|
32 MHz
|
44 I/O
|
|
1.62 V
|
3.6 V
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
ARM Microcontrollers - MCU 32MHz Arm Cortex-M0+ MCU with 128KB dual
- MSPM0L1117SPTR
- Texas Instruments
-
1:
$4.11
-
768In Stock
-
New Product
|
Mouser Part No
595-MSPM0L1117SPTR
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU 32MHz Arm Cortex-M0+ MCU with 128KB dual
|
|
768In Stock
|
|
|
$4.11
|
|
|
$2.67
|
|
|
$2.42
|
|
|
$2.42
|
|
Min.: 1
Mult.: 1
Max.: 25
:
1,000
|
|
|
MSPM0L1117
|
SMD/SMT
|
LQFP-48
|
ARM Cortex M0+
|
128 kB
|
32 bit
|
12 bit
|
32 MHz
|
44 I/O
|
16 kB
|
1.62 V
|
3.6 V
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
ARM Microcontrollers - MCU 32MHz Arm Cortex-M0+ MCU with 64KB flash
- MSPM0C1106SDGS20R
- Texas Instruments
-
1:
$3.25
-
775In Stock
-
New Product
|
Mouser Part No
595-SPM0C1106SDGS20R
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU 32MHz Arm Cortex-M0+ MCU with 64KB flash
|
|
775In Stock
|
|
|
$3.25
|
|
|
$2.08
|
|
|
$1.85
|
|
|
$1.85
|
|
Min.: 1
Mult.: 1
Max.: 25
:
5,000
|
|
|
MSPM0C1106
|
SMD/SMT
|
VSSOP-20
|
ARM Cortex M0+
|
64 kB
|
32 bit
|
12 bit
|
32 MHz
|
17 I/O
|
8 kB
|
1.62 V
|
3.6 V
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
ARM Microcontrollers - MCU 32MHz Arm Cortex-M0+ MCU with 64KB flash
- MSPM0C1106SDGS28R
- Texas Instruments
-
1:
$3.11
-
212In Stock
-
New Product
|
Mouser Part No
595-SPM0C1106SDGS28R
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU 32MHz Arm Cortex-M0+ MCU with 64KB flash
|
|
212In Stock
|
|
|
$3.11
|
|
|
$2.01
|
|
|
$1.80
|
|
|
$1.80
|
|
Min.: 1
Mult.: 1
Max.: 25
:
5,000
|
|
|
MSPM0C1106
|
SMD/SMT
|
VSSOP-28
|
ARM Cortex M0+
|
64 kB
|
32 bit
|
12 bit
|
32 MHz
|
25 I/O
|
8 kB
|
1.62 V
|
3.6 V
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
ARM Microcontrollers - MCU Dual-core ArmCortex- R5F MCU up to 400 M
- AM263P2ACOLFZCZR
- Texas Instruments
-
1:
$33.93
-
966In Stock
-
New Product
|
Mouser Part No
595-AM263P2ACOLFZCZR
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU Dual-core ArmCortex- R5F MCU up to 400 M
|
|
966In Stock
|
|
|
$33.93
|
|
|
$27.24
|
|
|
$25.57
|
|
|
$25.57
|
|
Min.: 1
Mult.: 1
Max.: 25
:
1,000
|
|
|
AM263P2
|
SMD/SMT
|
NFBGA-324
|
ARM Cortex R5F
|
8 MB
|
32 bit
|
12 bit
|
400 MHz
|
139 I/O
|
3 MB
|
1.14 V
|
1.26 V
|
- 40 C
|
+ 105 C
|
|
Reel, Cut Tape
|
|
|
|
ARM Microcontrollers - MCU C2000 32-bit MCU wit h 1x C28x + 1x CLA
- F28P550SJ9RSHR
- Texas Instruments
-
1:
$15.57
-
2,649In Stock
-
New Product
|
Mouser Part No
595-F28P550SJ9RSHR
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU C2000 32-bit MCU wit h 1x C28x + 1x CLA
|
|
2,649In Stock
|
|
|
$15.57
|
|
|
$12.12
|
|
|
$11.55
|
|
|
$10.04
|
|
|
$10.04
|
|
Min.: 1
Mult.: 1
Max.: 100
:
4,000
|
|
|
TMS320F28P550SJ
|
SMD/SMT
|
VQFN-56
|
ARM Cortex M7
|
1 MB
|
32 bit
|
12 bit
|
150 MHz
|
15 I/O
|
133 kB
|
2.8 V
|
3.63 V
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
ARM Microcontrollers - MCU
- M0L1227QPNRQ1
- Texas Instruments
-
1:
$5.88
-
1,000In Stock
-
New Product
|
Mouser Part No
595-M0L1227QPNRQ1
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU
|
|
1,000In Stock
|
|
|
$5.88
|
|
|
$3.89
|
|
|
$3.55
|
|
|
$3.01
|
|
|
$2.22
|
|
|
View
|
|
|
$2.86
|
|
|
$2.57
|
|
|
$2.20
|
|
|
$2.16
|
|
Min.: 1
Mult.: 1
:
1,000
|
|
|
|
SMD/SMT
|
LQFP-80
|
ARM Cortex M0+
|
128 kB
|
32 bit
|
12 bit
|
32 MHz
|
73 I/O
|
32 kB
|
1.62 V
|
3.6 V
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
ARM Microcontrollers - MCU
- M0L1228QPNRQ1
- Texas Instruments
-
1:
$6.57
-
939In Stock
-
New Product
|
Mouser Part No
595-M0L1228QPNRQ1
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU
|
|
939In Stock
|
|
|
$6.57
|
|
|
$4.34
|
|
|
$3.96
|
|
|
$3.96
|
|
Min.: 1
Mult.: 1
Max.: 25
:
1,000
|
|
|
|
SMD/SMT
|
LQFP-80
|
ARM Cortex M0+
|
256 kB
|
32 bit
|
12 bit
|
32 MHz
|
73 I/O
|
32 kB
|
1.62 V
|
3.6 V
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
ARM Microcontrollers - MCU Automotive 32MHz Arm Cortex-M0+ MCU with
- M0L2227QPTRQ1
- Texas Instruments
-
1:
$5.25
-
1,000In Stock
-
New Product
|
Mouser Part No
595-M0L2227QPTRQ1
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU Automotive 32MHz Arm Cortex-M0+ MCU with
|
|
1,000In Stock
|
|
|
$5.25
|
|
|
$3.47
|
|
|
$3.16
|
|
|
$2.68
|
|
|
$1.97
|
|
|
View
|
|
|
$2.54
|
|
|
$2.28
|
|
|
$1.92
|
|
|
$1.88
|
|
Min.: 1
Mult.: 1
:
1,000
|
|
|
MSPM0L2227-Q1
|
SMD/SMT
|
LQFP-48
|
ARM Cortex M0+
|
128 kB
|
32 bit
|
12 bit
|
32 MHz
|
43 I/O
|
32 KB
|
1.62 V
|
3.6 V
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
ARM Microcontrollers - MCU
- M0L2228QPNRQ1
- Texas Instruments
-
1:
$7.48
-
1,000In Stock
-
New Product
|
Mouser Part No
595-M0L2228QPNRQ1
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU
|
|
1,000In Stock
|
|
|
$7.48
|
|
|
$4.95
|
|
|
$4.52
|
|
|
$3.84
|
|
|
$2.82
|
|
|
View
|
|
|
$3.63
|
|
|
$3.26
|
|
|
$2.76
|
|
Min.: 1
Mult.: 1
:
1,000
|
|
|
|
SMD/SMT
|
LQFP-80
|
ARM Cortex M0+
|
256 kB
|
32 bit
|
12 bit
|
32 MHz
|
73 I/O
|
32 kB
|
1.62 V
|
3.6 V
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
ARM Microcontrollers - MCU Automotive 32MHz Arm Cortex-M0+ MCU with
- M0L2228QPTRQ1
- Texas Instruments
-
1:
$5.51
-
998In Stock
-
New Product
|
Mouser Part No
595-M0L2228QPTRQ1
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU Automotive 32MHz Arm Cortex-M0+ MCU with
|
|
998In Stock
|
|
|
$5.51
|
|
|
$3.64
|
|
|
$3.32
|
|
|
$3.32
|
|
Min.: 1
Mult.: 1
Max.: 25
:
1,000
|
|
|
MSPM0L2228-Q1
|
SMD/SMT
|
LQFP-48
|
ARM Cortex M0+
|
256 kB
|
32 bit
|
12 bit
|
32 MHz
|
43 I/O
|
32 KB
|
1.62 V
|
3.6 V
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
ARM Microcontrollers - MCU 32MHz Arm Cortex-M0+ MCU with 256KB dual
- MSPM0L1228SRGZR
- Texas Instruments
-
1:
$4.90
-
3,535In Stock
-
New Product
|
Mouser Part No
595-MSPM0L1228SRGZR
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU 32MHz Arm Cortex-M0+ MCU with 256KB dual
|
|
3,535In Stock
|
|
|
$4.90
|
|
|
$3.22
|
|
|
$2.98
|
|
|
$2.60
|
|
|
$2.60
|
|
Min.: 1
Mult.: 1
Max.: 100
:
4,000
|
|
|
MSPM0L1228
|
SMD/SMT
|
VQFN-48
|
ARM Cortex M0+
|
256 kB
|
32 bit
|
12 bit
|
32 MHz
|
43 I/O
|
|
1.62 V
|
3.6 V
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape
|
|
|
|
ARM Microcontrollers - MCU 32MHz Arm Cortex-M0+ MCU with 256KB dual
- MSPM0L2228SRGZR
- Texas Instruments
-
1:
$5.32
-
3,955In Stock
-
New Product
|
Mouser Part No
595-MSPM0L2228SRGZR
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU 32MHz Arm Cortex-M0+ MCU with 256KB dual
|
|
3,955In Stock
|
|
|
$5.32
|
|
|
$3.51
|
|
|
$3.20
|
|
|
$3.20
|
|
Min.: 1
Mult.: 1
Max.: 25
:
4,000
|
|
|
MSPM0L2228
|
SMD/SMT
|
VQFN-48
|
ARM Cortex M0+
|
256 kB
|
32 bit
|
12 bit
|
32 MHz
|
43 I/O
|
32 kB
|
1.62 V
|
3.6 V
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape
|
|
|
|
ARM Microcontrollers - MCU 500MHz dual-core Arm Cortex-R5F-based MC
- AM2612AOFFHIZFGR
- Texas Instruments
-
1:
$24.34
-
935In Stock
-
New Product
|
Mouser Part No
595-AM2612AOFFHIZFGR
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU 500MHz dual-core Arm Cortex-R5F-based MC
|
|
935In Stock
|
|
|
$24.34
|
|
|
$19.34
|
|
|
$18.09
|
|
|
$18.09
|
|
Min.: 1
Mult.: 1
Max.: 25
:
1,000
|
|
|
AM2612
|
SMD/SMT
|
NFBGA-304
|
ARM Cortex R5F
|
|
32 bit
|
12 bit
|
500 MHz
|
141 I/O
|
1.5 MB
|
1.188 V
|
1.32 V
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
ARM Microcontrollers - MCU C2000 32-bit MCU wit h 1x C28x + 1x CLA
- F28P550SJ6PDTR
- Texas Instruments
-
1:
$17.08
-
923In Stock
-
New Product
|
Mouser Part No
595-F28P550SJ6PDTR
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU C2000 32-bit MCU wit h 1x C28x + 1x CLA
|
|
923In Stock
|
|
|
$17.08
|
|
|
$13.89
|
|
|
$13.25
|
|
|
$13.25
|
|
Min.: 1
Mult.: 1
Max.: 25
:
1,000
|
|
|
TMS320F28P550SJ
|
SMD/SMT
|
PDT-128
|
ARM Cortex M7
|
1 MB
|
32 bit
|
12 bit
|
300 MHz
|
65 I/O
|
133 kB
|
1.14 V
|
1.32 V
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape
|
|
|
|
ARM Microcontrollers - MCU C2000 32-bit MCU wit h 1x C28x + 1x CLA
- F28P550SJ9PDT
- Texas Instruments
-
1:
$19.23
-
474In Stock
-
New Product
|
Mouser Part No
595-F28P550SJ9PDT
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU C2000 32-bit MCU wit h 1x C28x + 1x CLA
|
|
474In Stock
|
|
|
$19.23
|
|
|
$14.61
|
|
|
$14.01
|
|
|
$12.32
|
|
Min.: 1
Mult.: 1
Max.: 100
|
|
|
TMS320F28P550SJ
|
SMD/SMT
|
TQFP-128
|
ARM Cortex M7
|
1 MB
|
32 bit
|
12 bit
|
150 MHz
|
65 I/O
|
133 kB
|
2.8 V
|
3.63 V
|
- 40 C
|
+ 125 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU C2000 32-bit MCU wit h 1x C28x + 1x CLA
- F28P550SJ9PDTR
- Texas Instruments
-
1:
$15.71
-
911In Stock
-
New Product
|
Mouser Part No
595-F28P550SJ9PDTR
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU C2000 32-bit MCU wit h 1x C28x + 1x CLA
|
|
911In Stock
|
|
|
$15.71
|
|
|
$12.31
|
|
|
$11.45
|
|
|
$11.45
|
|
Min.: 1
Mult.: 1
Max.: 25
:
1,000
|
|
|
TMS320F28P550SJ
|
SMD/SMT
|
TQFP-128
|
ARM Cortex M7
|
1 MB
|
32 bit
|
12 bit
|
150 MHz
|
65 I/O
|
133 kB
|
2.8 V
|
3.63 V
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
ARM Microcontrollers - MCU C2000 32-bit MCU 1x C28x + 1x CLA 150-
- F28P550SJ9PM
- Texas Instruments
-
1:
$17.67
-
1,243In Stock
-
New Product
|
Mouser Part No
595-F28P550SJ9PM
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU C2000 32-bit MCU 1x C28x + 1x CLA 150-
|
|
1,243In Stock
|
|
|
$17.67
|
|
|
$14.36
|
|
|
$13.70
|
|
Min.: 1
Mult.: 1
Max.: 50
|
|
|
TMS320F28P550SJ
|
SMD/SMT
|
LQFP-64
|
ARM Cortex M7
|
1.06 MB
|
32 bit
|
12 bit
|
150 MHz
|
17 I/O
|
133 kB
|
1.14 V
|
1.32 V
|
- 40 C
|
+ 125 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU C2000 32-bit MCU 1x C28x + 1x CLA 150-
- F28P550SJ9PMR
- Texas Instruments
-
1:
$16.33
-
968In Stock
-
New Product
|
Mouser Part No
595-F28P550SJ9PMR
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU C2000 32-bit MCU 1x C28x + 1x CLA 150-
|
|
968In Stock
|
|
|
$16.33
|
|
|
$12.70
|
|
|
$12.12
|
|
|
$12.12
|
|
Min.: 1
Mult.: 1
Max.: 25
:
1,000
|
|
|
TMS320F28P550SJ
|
SMD/SMT
|
LQFP-64
|
ARM Cortex M7
|
1.06 MB
|
32 bit
|
12 bit
|
150 MHz
|
17 I/O
|
133 kB
|
1.14 V
|
1.32 V
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape
|
|
|
|
ARM Microcontrollers - MCU C2000 32-bit MCU wit h 1x C28x + 1x CLA
- F28P550SJ9PNA
- Texas Instruments
-
1:
$17.49
-
1,515In Stock
-
New Product
|
Mouser Part No
595-F28P550SJ9PNA
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU C2000 32-bit MCU wit h 1x C28x + 1x CLA
|
|
1,515In Stock
|
|
|
$17.49
|
|
|
$13.29
|
|
|
$12.74
|
|
Min.: 1
Mult.: 1
Max.: 25
|
|
|
TMS320F28P550SJ
|
SMD/SMT
|
TQFP-80
|
ARM Cortex M7
|
1 MB
|
32 bit
|
12 bit
|
150 MHz
|
32 I/O
|
133 kB
|
2.8 V
|
3.63 V
|
- 40 C
|
+ 125 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU C2000 32-bit MCU 1x C28x + 1x CLA 150-
- F28P550SJ9PZ
- Texas Instruments
-
1:
$18.18
-
753In Stock
-
New Product
|
Mouser Part No
595-F28P550SJ9PZ
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU C2000 32-bit MCU 1x C28x + 1x CLA 150-
|
|
753In Stock
|
|
|
$18.18
|
|
|
$13.82
|
|
|
$13.25
|
|
Min.: 1
Mult.: 1
Max.: 25
|
|
|
TMS320F28P550SJ
|
SMD/SMT
|
LQFP-100
|
ARM Cortex M7
|
1.06 MB
|
32 bit
|
12 bit
|
150 MHz
|
43 I/O
|
133 kB
|
1.14 V
|
1.32 V
|
- 40 C
|
+ 125 C
|
|
Tray
|
|
|
|
ARM Microcontrollers - MCU C2000 32-bit MCU 1x C28x + 1x CLA 150-
- F28P550SJ9PZR
- Texas Instruments
-
1:
$16.89
-
1,825In Stock
-
New Product
|
Mouser Part No
595-F28P550SJ9PZR
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU C2000 32-bit MCU 1x C28x + 1x CLA 150-
|
|
1,825In Stock
|
|
|
$16.89
|
|
|
$13.74
|
|
|
$13.10
|
|
|
$11.37
|
|
|
$11.37
|
|
Min.: 1
Mult.: 1
Max.: 150
:
1,000
|
|
|
TMS320F28P550SJ
|
SMD/SMT
|
LQFP-100
|
ARM Cortex M7
|
1 MB
|
32 bit
|
12 bit
|
150 MHz
|
43 I/O
|
133 kB
|
1.14 V
|
1.32 V
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
ARM Microcontrollers - MCU Automotive C2000 32- bit MCU 1x C28x + 1
- F28P559SJ2PMRQ1
- Texas Instruments
-
1:
$15.50
-
855In Stock
-
New Product
|
Mouser Part No
595-F28P559SJ2PMRQ1
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU Automotive C2000 32- bit MCU 1x C28x + 1
|
|
855In Stock
|
|
|
$15.50
|
|
|
$12.06
|
|
|
$11.51
|
|
|
$11.51
|
|
Min.: 1
Mult.: 1
Max.: 50
:
1,000
|
|
|
TMS320F28P559SJ
|
SMD/SMT
|
PDT-128
|
ARM Cortex M7
|
1 MB
|
32 bit
|
12 bit
|
200 MHz
|
65 I/O
|
133 kB
|
1.14 V
|
1.32 V
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape
|
|
|
|
ARM Microcontrollers - MCU Automotive C2000 32- bit MCU 1x C28x + 1
- F28P559SJ9PMRQ1
- Texas Instruments
-
1:
$17.75
-
979In Stock
-
New Product
|
Mouser Part No
595-F28P559SJ9PMRQ1
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU Automotive C2000 32- bit MCU 1x C28x + 1
|
|
979In Stock
|
|
|
$17.75
|
|
|
$14.43
|
|
|
$13.75
|
|
|
$13.75
|
|
Min.: 1
Mult.: 1
Max.: 25
:
1,000
|
|
|
TMS320F28P559SJ
|
SMD/SMT
|
LQFP-64
|
ARM Cortex M7
|
1 MB
|
32 bit
|
12 bit
|
200 MHz
|
17 I/O
|
133 kB
|
1.14 V
|
1.32 V
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape
|
|
|
|
ARM Microcontrollers - MCU Automotive 24MHz Arm Cortex-M0+ MCU with
- M0C1103QDGS20RQ1
- Texas Instruments
-
1:
$1.65
-
3,856In Stock
-
New Product
|
Mouser Part No
595-M0C1103QDGS20RQ1
New Product
|
Texas Instruments
|
ARM Microcontrollers - MCU Automotive 24MHz Arm Cortex-M0+ MCU with
|
|
3,856In Stock
|
|
|
$1.65
|
|
|
$1.19
|
|
|
$1.07
|
|
|
$0.948
|
|
|
$0.888
|
|
|
$0.888
|
|
Min.: 1
Mult.: 1
Max.: 300
:
5,000
|
|
|
MSPM0C1103
|
SMD/SMT
|
VSSOP-20
|
ARM Cortex M0+
|
8 kB
|
32 bit
|
12 bit
|
24 MHz
|
18 I/O
|
1 kB
|
1.62 V
|
3.6 V
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
Singapore