SiM3C157-B-GM Silicon Labs, SiM3C157-B-GM Datasheet - Page 29

• Manufacturer Part Number: SiM3C157-B-GM
• Description: ARM Microcontrollers - MCU 128KB LGA92
• Manufacturer: Silicon Labs

Specifications of SiM3C157-B-GM

• Rohs: yes
• Core: ARM Cortex M3
• Processor Series: SIM3C1xx
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 80 MHz
• Program Memory Size: 128 KB
• Data Ram Size: 42 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: LGA-92
• Mounting Style: SMD/SMT
• Interface Type: 2 x I2C, I2S, 3 x SPI, 2 x USART, 2 x UART
• Number Of Programmable I/os: 75
• Number Of Timers: 12 x 32 bit
• Supply Voltage - Max: 3.6 V

Table 3.18. Thermal Conditions
3.2. Thermal Conditions
3.3. Absolute Maximum Ratings
Stresses above those listed under Table 3.19 may cause permanent damage to the device. This is a stress rating
only and functional operation of the devices at those or any other conditions above those indicated in the operation
listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect
device reliability.
Table 3.19. Absolute Maximum Ratings
Thermal Resistance*
*Note: Thermal resistance assumes a multi-layer PCB with any exposed pad soldered to a PCB pad.
Ambient Temperature Under Bias
Storage Temperature
Voltage on VDD
Voltage on VREGIN
Voltage on VIO
Voltage on VIOHD
Voltage on I/O pins, 
non Port Bank 3 I/O
*Note: VSS and VSSHD provide separate return current paths for device supplies, but are not isolated. They must always be
connected to the same potential on board.
Parameter
Parameter
Symbol

Symbol
V
JA
V
T
T
V
REGIN
V
V
IOHD
BIAS
STG
DD
IO
IN
TQFP-80 Packages
TQFP-64 Packages
Port Bank 0, 1, and 2 I/O
QFN-64 Packages
QFN-40 Packages
LGA-92 Packages
EXTVREG0 Not Used
Test Condition
RESET, V
RESET, V
EXTVREG0 Used
Rev.1.0
Test Condition
Port Bank 4 I/O
IO
IO
> 3.3 V
< 3.3 V
V
Min
V
V
V
V
V
V
V
V
—
—
—
—
—
SSHD
SS
SS
SS
SS
SS
SS
SS
SS
Min
–55
–65
–0.3
–0.3
–0.3
–0.3
–0.3
–0.3
–0.3
–0.3
–0.3
Typ
35
40
25
30
30
SiM3C1xx
V
V
V
IOHD
IO
IO
Max
125
150
4.2
6.0
3.6
4.2
6.5
5.8
+2.5
+0.3
Max
+0.3
—
—
—
—
—
°C/W
°C/W
°C/W
°C/W
°C/W
Unit
Unit
°C
°C
V
V
V
V
V
V
V
V
V
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