ST7232AK2-Auto STMicroelectronics, ST7232AK2-Auto Datasheet - Page 74

• 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
10.2.2
Caution:
10.2.3
10.2.4
74/201
Clock-out capability
The clock-out capability is an alternate function of an I/O port pin that outputs a f
to drive external devices. It is controlled by the MCO bit in the MCCSR register.
When selected, the clock out pin suspends the clock during active halt mode.
Real-time clock timer (RTC)
The counter of the real-time clock timer allows an interrupt to be generated based on an
accurate real-time clock. Four different time bases depending directly on f
The whole functionality is controlled by four bits of the MCCSR register: TB[1:0], OIE and
OIF.
When the RTC interrupt is enabled (OIE bit set), the ST7 enters active halt mode when the
HALT instruction is executed. See
Beeper
The beep function is controlled by the MCCBCR register. It can output three selectable
frequencies on the BEEP pin (I/O port alternate function).
Figure 31. Main clock controller (MCC/RTC) block diagram
f
OSC2
MCCBCR
MCCSR
DIV 2, 4, 8, 16
MCO
CP1 CP0
DIV 64
SMS
1
0
Section 8.4: Active halt and halt modes
12-bit MCC RTC
TB1 TB0
Beep signal
BC1 BC0
selection
counter
OIE
OIF
To watchdog timer
MCC/RTC interrupt
f
CPU
OSC2
ST7232Axx-Auto
for more details.
are available.
OSC2
to CPU and
peripherals
CPU clock
Beep
MCO
clock