SIM3L157-C-GQ Silicon Labs, SIM3L157-C-GQ Datasheet - Page 7

• Manufacturer Part Number: SIM3L157-C-GQ
• Description: ARM Microcontrollers - MCU 128KB, DC-DC, 40x4 LCD, AES, TQFP80
• Manufacturer: Silicon Labs

Specifications of SIM3L157-C-GQ

• Rohs: yes
• Core: ARM Cortex M3
• Processor Series: SiM3L1xx
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 50 MHz
• Program Memory Size: 128 KB
• Data Ram Size: 32 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 1.8 V to 3.8 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: TQFP-80
• Mounting Style: SMD/SMT
• A/d Bit Size: 12 bit
• A/d Channels Available: 24
• Interface Type: I2C, SPI
• Length: 14 mm
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 62
• Number Of Timers: 3
• On-chip Dac: Yes
• Program Memory Type: Flash
• Supply Voltage - Max: 3.8 V
• Supply Voltage - Min: 1.8 V

Figure 2.4 shows a typical connection diagram for the power pins of the SiM3L1xx devices when the dc-dc buck
converter is used and the I/O are powered separately.
VBAT/VBATDC input
4.7, 0.1, and 0.01 uF
VBAT/VBATDC input
4.7, 0.1, and 0.01 uF
bypass capacitors
bypass capacitors
required on
Figure 2.4. Connection Diagram with DC-DC Converter Used and I/O Powered Separately
required on
Figure 2.3. Connection Diagram with External Radio Device
placed as close to the
capacitors must be
1 uF and 0.1 uF bypass
placed as close to the
pins as possible.
capacitors required for
capacitors must be
each I/O power pin
pins as possible.
1.8-VBAT V
1 uF and 0.1 uF bypass
capacitors required for
each I/O power pin
VBAT/VBATDC
1.8-VBAT V
VLCD
VBAT/VBATDC
VIO
10 uF capacitor required
on the VLCD pin
VIORF
VLCD
VIO
10 uF capacitor required
on the VLCD pin
Converter
SiM3L1xx Device
DC-DC
Low Dropout
Rev 0.5
Regulator
(LDO0)
Converter
SiM3L1xx Device
DC-DC
Low Dropout
Regulator
(LDO0)
IND
VDC
VSSDC
VSS
VDRV
VIORF
IND
VDC
VDRV
VSSDC
VSS
to external
to external
circuitry
radio
required between the
IND and VDC pins
required between the
0.56 uH inductor
IND and VDC pins
0.56 uH inductor
SiM3L1xx
required on VDC output
2.2, 0.1, and 0.01 uF
required on VDC output
bypass capacitors
2.2, 0.1, and 0.01 uF
bypass capacitors
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