ST72254G2-Auto STMicroelectronics, ST72254G2-Auto Datasheet - Page 38

• Manufacturer Part Number: ST72254G2-Auto
• Description: 8-bit MCU for automotive with single voltage Flash/ROM memory, ADC, 16-bit timers, SPI, I2C interfaces
• Manufacturer: STMicroelectronics

Specifications of ST72254G2-Auto

• Clock Sources: crystal/ceramic resonator oscillators or RC oscillators, external clock, backup Clock Security System
• 3 Power Saving Modes: Halt, Wait and Slow
• Two 16-bit Timers With: 2 input captures, 2 output compares, external clock input on one timer, PWM and Pulse generator modes (one only on ST72104Gx-Auto and ST72216G1- Auto)

ST72104Gx-Auto, ST72215Gx-Auto, ST72216Gx-Auto, ST72254Gx-Auto
MISCELLANEOUS REGISTERS (Cont’d)
MISCELLANEOUS REGISTER 2 (MISCR2)
Read / Write
Reset Value: 0000 0000 (00h)
Bit 7:4 = Reserved always read as 0
Bit 3 = MOD SPI Master Output Disable
This bit is set and cleared by software. When set, it
disables the SPI Master (MOSI) output signal.
0: SPI Master Output enabled.
1: SPI Master Output disabled.
Bit 2 = SOD SPI Slave Output Disable
This bit is set and cleared by software. When set it
disable the SPI Slave (MISO) output signal.
0: SPI Slave Output enabled.
1: SPI Slave Output disabled.
Bit 1 = SSM SS mode selection
This bit is set and cleared by software.
0: Normal mode - the level of the SPI SS signal is
1: I/O mode, the level of the SPI SS signal is read
Bit 0 = SSI SS internal mode
This bit replaces the SS pin of the SPI when the
SSM bit is set to 1. (see SPI description). It is set
and cleared by software.
Table 10. Miscellaneous Register Map and Reset Values
38/135
Address
input from the external SS pin.
from the SSI bit.
7
0
(Hex.)
0020h
0040h
0
MISCR1
Reset Value
MISCR2
Reset Value
Register
0
Label
0
MOD SOD SSM
IS11
7
0
0
IS10
6
0
0
SSI
0
MCO
5
0
0
IS01
4
0
0
MOD
IS00
3
0
0
SOD
CP1
2
0
0
SSM
CP0
1
0
0
SMS
SSI
0
0
0