SiM3U1xx
6. Ordering Information
Si M3 U 1 4 4 – B – GM
Temperature Grade and Package Type
Revision
Pin Count – 4 (40 pin), 6 (64 pin), 7 (80 or 92 pin)
Memory Size – 3 (32 kB), 4 (64 kB), 5 (128 kB), 6 (256 kB)
Feature Set – varies by family
Family – U (USB), C (Core)
Core – M3 (Cortex M3)
Silicon Labs
Figure 6.1. SiM3U1xx Part Numbering
All devices in the SiM3U1xx family have the following features:
Core:
ARM Cortex-M3 with maximum operating frequency of 80 MHz.
Flash Program Memory:
32-256 kB, in-system programmable.
RAM:
8–32 kB SRAM, with 4 kB retention SRAM
I/O:
Up to 65 multifunction I/O pins, including high-drive and 5 V-tolerant pins.
Clock Sources:
Internal and external oscillator options.
16-Channel DMA Controller.
128/192/256-bit AES.
16/32-bit CRC.
Timers:
2 x 32-bit (4 x 16-bit).
Real-Time Clock.
Low-Power Timer.
PCA:
1 x 6 channels (Enhanced), 2 x 2 channels (Standard). PWM, capture, and clock generation
capabilites.
ADC:
2 x 12-bit 250 ksps (10-bit 1 Msps) SAR.
DAC:
2 x 10-bit IDAC.
Temperature Sensor.
Internal VREF.
16-channel Capacitive Sensing (CAPSENSE).
Comparator:
2 x low current.
Current to Voltage Converter (IVC).
USB:
Full or low-speed, crystalless operation using internal USB oscillator.
Buses:
2 x USART, 2 x UART, 3 x SPI, 2 x I2C, 1 x I
2
S.
The inclusion of some features varies across different members of the device family. The differences are detailed in
Serial
72
Preliminary Rev. 0.8
SILABS [ SILICON LABORATORIES ]
