ST7232AK2-Auto STMicroelectronics, ST7232AK2-Auto Datasheet - Page 116

• Manufacturer Part Number: ST7232AK2-Auto
• Description: 8-bit MCU for automotive, 16 Kbyte Flash, 10-bit ADC, 4 timers, SPI, SCI
• Manufacturer: STMicroelectronics

Specifications of ST7232AK2-Auto

• Hdflash Endurance: 100 cycles, data retention
• Clock Sources: crystal/ceramic resonator oscillators and bypass for external clock
• Four Power Saving Modes: halt, active halt, wait and slow
• Main Clock Controller With: real time base, beep and clock-out capabilities
• Two 16-bit Timers With: 2 input captures, 2 output compares, PWM and pulse generator modes

On-chip peripherals
Note:
116/201
1
2
Table 42.
Data I/O register (SPIDR)
The SPIDR register is used to transmit and receive data on the serial bus. In a master
device, a write to this register initiates transmission/reception of another byte.
During the last clock cycle the SPIF bit is set, a copy of the received data byte in the shift
register is moved to a buffer. When the user reads the serial peripheral data I/O register, the
buffer is actually being read.
While the SPIF bit is set, all writes to the SPIDR register are inhibited until the SPICSR
register is read.
A read to the SPIDR register returns the value located in the buffer and not the content of
the shift register (see
SPIDR
Bit
7
1
0
Warning:
SPICSR register description (continued)
Bit name
6
SSM
SSI
A write to the SPIDR register places data directly into the
shift register for transmission.
Figure
SS internal mode
SS management
5
46).
This bit is set and cleared by software. When set, it disables the
alternate function of the SPI SS pin and uses the SSI bit value
instead. See
0: Hardware management (SS managed by external pin)
1: Software management (internal SS signal controlled by SSI bit.
External SS pin free for general-purpose I/O)
This bit is set and cleared by software. It acts as a ‘chip select’ by
controlling the level of the SS slave select signal when the SSM bit is
set.
0 : Slave selected
1 : Slave deselected
4
Slave select management on page
D[7:0]
R/W
3
Function
2
Reset value: undefined
105.
ST7232Axx-Auto
1
0