SIM3U146-B-GM Silicon Labs, SIM3U146-B-GM Datasheet - Page 35

• Manufacturer Part Number: SIM3U146-B-GM
• Description: ARM Microcontrollers - MCU ARM Cortex-M3 USB 64KB QFN64
• Manufacturer: Silicon Labs

Specifications of SIM3U146-B-GM

• Rohs: yes
• Core: ARM Cortex M3
• Processor Series: SIM3U1xx
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 80 MHz
• Program Memory Size: 64 KB
• Data Ram Size: 32 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 1.8 V to 3.6 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: QFN-64
• Mounting Style: SMD/SMT
• Interface Type: 2 x I2C, I2S, 3 x SPI, 2 x USART, 2 x UART
• Number Of Programmable I/os: 65
• Number Of Timers: 2 x 32 bit
• Supply Voltage - Max: 3.6 V

4. Precision32™ SiM3U1xx System Overview
The SiM3U1xx Precision32™ devices are fully integrated, mixed-signal system-on-a-chip MCUs. Highlighted
features are listed below. Refer to Table 5.1 for specific product feature selection and part ordering numbers.
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Core:
Memory: 32–256 kB Flash; in-system programmable, 8–32 kB SRAM (including 4 kB retention SRAM,
which preserves state in PM9 mode).
Power:
I/O: Up to 65 total multifunction I/O pins:
Clock Sources:
Data Peripherals:
Timers/Counters and PWM:
Communications Peripherals:
Analog:
On-Chip Debugging
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accuracy.
32-bit ARM Cortex-M3 CPU.
80 MHz maximum operating frequency.
Branch target cache and prefetch buffers to minimize wait states.
Low drop-out (LDO) regulator for CPU core voltage.
Power-on reset circuit and brownout detectors.
3.3 V output LDO for direct power from 5 V supplies.
External transistor regulator.
Power Management Unit (PMU).
Up to six programmable high-power capable (5–300 mA with programmable current limiting, 1.8–5 V).
Up to twelve 5 V tolerant general purpose pins.
Two flexible peripheral crossbars for peripheral routing.
Internal oscillator with PLL: 23
Internal 48 MHz oscillator with clock recovery supports crystal-less full speed USB operation with ± 0.25%
Low-power internal oscillator: 20 MHz and 2.5 MHz modes.
Low-frequency internal oscillator: 16.4 kHz.
External RTC crystal oscillator: 32.768 kHz.
External oscillator: Crystal, RC, C, CMOS clock modes.
Programmable clock divider allows any oscillator source to be divided by binary factor from 1-128.
16-Channel DMA Controller.
128/192/256-bit Hardware AES Encryption.
16/32-bit CRC.
6-channel Enhanced Programmable Counter Array (EPCAn) supporting advanced PWM and capture/compare.
2 x 2-channel Standard Programmable Counter Array (PCAn) supporting PWM and capture/compare.
2 x 32-bit Timers - can be split into 4 x 16-bit Timers, support PWM and capture/compare.
Real Time Clock (RTCn).
Low Power Timer.
Watchdog Timer.
External Memory Interface.
USB 2.0-compliant full speed with integrated transceiver, 5 bidirectional endpoints and dedicated 2 kB buffer.
2 x USARTs and 2 x UARTs with IrDA and ISO7816 SmartCard support.
3 x SPIs.
2 x I2C.
I
2 x 12-Bit Analog-to-Digital Converters (SARADC).
2 x 10-Bit Digital-to-Analog Converter (IDAC).
16-Channel Capacitance-to-Digital Converter (CAPSENSE).
2 x Low-Current Comparators (CMP).
1 x Current-to-Voltage Converter (IVC) module with two channels.
2
S (receive and transmit).
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80 MHz with ± 1.5% accuracy in free-running mode.
Rev. 1.0
SiM3U1xx
35