ST7232AK2-Auto STMicroelectronics, ST7232AK2-Auto Datasheet - Page 76

• 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
10.2.7
76/201
MCC/RTC registers
MCC control/status register (MCCSR)
Table 29.
MCCSR
MCO
R/W
6:5
3:2
Bit
7
7
4
MCCSR register description
Bit name
CP[1:0]
TB[1:0]
6
MCO
SMS
CP[1:0]
R/W
Main clock out selection
CPU clock prescaler
Slow mode select
Time base control
5
This bit enables the MCO alternate function on the PF0 I/O port. It is
set and cleared by software.
0: MCO alternate function disabled (I/O pin free for
1: MCO alternate function enabled (f
Note: To reduce power consumption, the MCO function is not active
in active halt mode.
These bits select the CPU clock prescaler which is applied in the
different slow modes. Their action is conditioned by the setting of the
SMS bit. These two bits are set and cleared by software.
00: f
01: f
10: f
11: f
This bit is set and cleared by software.
0: Normal mode, f
1: Slow mode, f
mode
and beeper (MCC/RTC)
These bits select the programmable divider time base. They are set
and cleared by software:
00: Time base (for counter prescaler 16000) = 4ms (f
01: Time base (for counter prescaler 32000) = 8ms (f
10: Time base (for counter prescaler 80000) = 20ms (f
11: Time base (for counter prescaler 200000) = 50ms
A modification of the time base is taken into account at the end of the
current period (previously set) to avoid an unwanted time shift. This
allows use of this time base as a real-time clock.
general-purpose I/O)
and 2ms (f
and 4ms (f
and 10ms (f
(f
CPU
CPU
CPU
CPU
OSC2
and
in slow mode = f
in slow mode = f
in slow mode = f
in slow mode = f
SMS
R/W
Section 10.2: Main clock controller with real-time clock
= 4MHz) and 25ms (f
4
OSC2
OSC2
CPU
OSC2
CPU
is given by CP1, CP0; see
= 8MHz)
= 8MHz)
= 8MHz)
= f
3
for more details.
OSC2
OSC2
OSC2
OSC2
OSC2
TB[1:0]
Function
R/W
/2
/4
/8
/16
OSC2
CPU
2
= 8MHz)
Reset value: 0000 0000 (00h)
on I/O port)
Section 8.2: Slow
R/W
OIE
ST7232Axx-Auto
1
OSC2
OSC2
OSC2
= 4MHz)
= 4MHz)
= 4MHz)
R/W
OIF
0