SiM3U167-B-GDI
High-Performance, Low-Power, 32-Bit Precision32™
USB MCU Family with up to 256 kB of Flash Die in Wafer Form
32-bit ARM® Cortex™-M3 CPU
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80 MHz maximum frequency
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Single-cycle multiplication, hardware division support
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Nested vectored interrupt control (NVIC) with 16 priority levels
Memory
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32–256 kB Flash, in-system programmable
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8–32 kB SRAM (including 4 kB retention SRAM)
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16-channel DMA controller
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External bus interface supports up to 16 MB of external mem-
ory and a parallel LCD interface with QVGA resolution
Analog Peripherals
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2 x 12-Bit Analog-to-Digital Converters: Up to 250 ksps 12-bit
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mode or 1 Msps 10-bit mode, internal or external reference
2 x 10-Bit Current-mode Digital-to-Analog Converters, four-
word buffer enables 12-bit operation
2 x Low-current comparators
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16-Channel Capacitance-to-Digital: Fast, <1 µA wake-on-touch
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2 x Current-to-Voltage Converter, up to 6 mA input range
Digital and Communication Peripherals
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USB 2.0-compliant full speed with 10 endpoints, 2 kB buffer,
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3 x SPIs, 2 x I2C, I
2
S (receive and transmit), 16/32-bit CRC
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128/192/256-bit Hardware AES Encryption
Timers/Counters
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2 x 32-bit or 4 x 16-bit timers with capture/compare
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2 x 16-bit, 2-channel counters with capture/compare/PWM
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16-bit, 6-channel counter with capture/compare/PWM and
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32-bit real time clock (RTC) with multiple alarms
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Watchdog timer
dead-time controller with differential outputs
16-bit low power timer/pulse counter operational in sleep
oscillator with automatic frequency correction, and transceiver;
no external components needed
2 x USARTs and 2 x UARTs with IrDA and ISO7816 SmartCard
Power Management
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Low drop-out (LDO) regulator
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Power-on reset circuit and brownout detectors
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5–3.3 V 150 mA regulator supports direct USB power
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Adjustable external regulator supports up to 3.6 V, 1000 mA
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Multiple power modes supported for low power optimization
Low Power Features
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85 nA current mode with voltage supply monitor enabled
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Low-current RTC: 350 nA internal LFO, 620 nA external crystal
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10 µs wakeup (lowest power mode); 1.5 µs analog setting time
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275 µA/MHz active current
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Clocks can be gated off from unused peripherals to save power
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Flexible clock divider: Reduce operational frequency up to 128x
Clock Sources
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Internal oscillator with PLL: 23-80 MHz, reduced EMI mode
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USB internal 48 MHz oscillator supports crystal-less operation
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Low power internal oscillator: 20 MHz and 2.5 MHz modes
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Low frequency internal oscillator: 16.4 kHz
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External oscillators: Crystal, RC, C, CMOS and RTC Crystal
Supply Voltage
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2.7 to 5.5 V (regulator enabled)
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1.8 to 3.6 V (regulator disabled)
Temperature Range: –40 to +85 °C
Power
5 V In, 3.3 V Out LDO
(Direct Power From USB)
1.8 V Internal LDO
(Internal Logic and Memory Power)
External 1A Regulator
Power Management Unit
Supply Monitor
Up to 65 Flexible I/O
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Up to 59 contiguous GPIO with two priority crossbars providing
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flexibility in pin assignments; 12 x 5 V tolerant GPIO
Up to 6 programmable high drive capable (5–300 mA, 1.8–6 V)
I/O can drive LEDs, power MOSFETs, buzzers, etc.
On-Chip Debugging
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Serial wire debug (SWD) or JTAG (no boundary scan), serial
wire viewer (SWV)
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Cortex-M3 embedded trace macrocell (ETM)
Full Technical Data Sheet
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SiM3U1xx
Core / Memory / Support
ARM Cortex M3 (80 MHz)
32/64/128/256 kB Flash
8/16/32 kB SRAM w/ 4kB Retention
16-Channel DMA Controller
Watchdog
Serial Wire / JTAG / ETM
Analog Peripherals
2 x SAR ADC
(12-bit 250 ksps / 10-bit 1 Msps)
Voltage Reference
2 x Current-Source DAC
2 x Low Current Comparators
2 x Current-to-Voltage Converter
16-Channel Capacitive Sense
65 Multi-Function I/O Pins (12 x 5 V tol, 6 x High-Drive)
Flexible Pin Muxing
Two Priority Crossbar
Encoders
Clocking / Oscillators
80 MHz PLL
48 MHz USB Oscillator
Real-Time Clock w/ Dedicated Crystal
16 kHz Low Frequency Oscillator
20 MHz Low Power Oscillator
External Oscillator Drive
Clock Selection
and Gating
I2S TX/RX
Digital Peripherals
2 x I2C
3 x SPI
AES
CRC
2 x 32-bit Timers (4 x 16-bit)
USB 2.0
Full-Speed
MAC/PHY
2 x UART, 2 x USART w/ IrDA/SmartCard
6-Channel Enhanced PWM
2 x 2-Channel Standard PWM
Low-Power Timer
External Parallel I/F
Rev. 1.1 5/14
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SiM3U167-B-GDI
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