32-bit ARM Cortex-M3 CPU
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50 MHz maximum frequency
Single-cycle multiplication, hardware division support
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Nested vectored interrupt control (NVIC) with 8 priority levels
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Memory
32–256 kB flash, in-system programmable
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8–32 kB SRAM with configurable low power retention
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Clock Sources
Internal oscillator with PLL: 23–50 MHz
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Low power internal oscillator: 20 MHz
Low frequency internal oscillator (LFO): 16.4 kHz
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External real-time clock (RTC) crystal oscillator
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External oscillator: Crystal, RC, C, CMOS clock
Power Management
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Three adjustable low drop-out (LDO) regulators
Power-on reset circuit and brownout detectors
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DC-DC buck converter allows dynamic voltage scaling for
maximum efficiency (250 mW output)
Multiple power modes supported for low power optimization
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Low Power Features
75 nA typical current in Power Mode 8
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Low-current RTC (180 nA from LFO, 300 nA from crystal)
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4 μs wakeup, register state retention and no reset required from
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lowest power mode
175 μA/MHz at 3.6 V executing from flash
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140 μA/MHz at 3.6 V executing from SRAM
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Specialized on-chip charge pump reduces power consumption
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Process/Voltage/Temperature (PVT) Monitor
5 V Tolerant Flexible I/O
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Up to 62 contiguous 5 V tolerant GPIO with one priority cross-
bar providing flexibility in pin assignments
Temperature Range: –40 to +85 °C
Supply Voltage: 1.8 to 3.8 V
Rev 1.1 11/14
High-Performance, Low-Power, 32-Bit Precision32™
Analog Peripherals
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12-Bit Analog-to-Digital Converter: Up to 250 ksps 12-bit mode
or 1 Msps 10-bit mode
10-Bit Current-mode Digital-to-Analog Converter
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2 x Low-current comparators
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Digital and Communication Peripherals
1 x USART with IrDA and ISO7816 Smartcard support
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1 x UART that operates in low power mode
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2 x SPIs, 1 x I2C, 16/32-bit CRC
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128/192/256-bit Hardware AES Encryption
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Encoder/Decoder: Manchester and Three-out-of-Six
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Integrated LCD Controller: up to 160 segments (40x4), auto-
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contrast and low power operation
Timers/Counters
3 x 32-bit or 6 x 16-bit timers with capture/compare
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16-bit, 6-channel counter with capture/compare/PWM and
dead-time controller with differential outputs
16-bit low power timer/advanced capture counter operational in
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the lowest power mode
32-bit real time clock (RTC) with multiple alarms
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Watchdog timer
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Low power mode advanced capture counter (ACCTR)
Data Transfer Peripherals
10-Channel DMA Controller
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3 Channel Data Transfer Manager manages complex DMA
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transfers without core intervention
On-Chip Debugging
Serial wire debug (SWD) with serial wire viewer (SWV) or JTAG
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(no boundary scan) allow debug and programming
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Cortex-M3 embedded trace macrocell (ETM)
Package Options
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QFN options: 40-pin (6 x 6 mm), 64-pin (9 x 9 mm)
TQFP options: 64-pin (10 x 10 mm), 80-pin (12 x 12 mm)
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Copyright © 2013 by Silicon Laboratories
SiM3L1xx
MCU Family with up to 256 kB of Flash
SiM3L1xx
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