ST72361J6 STMicroelectronics, ST72361J6 Datasheet - Page 58

• Manufacturer Part Number: ST72361J6
• Description: 8-bit MCU
• Manufacturer: STMicroelectronics

Specifications of ST72361J6

• Hdflash Endurance: 100 cycles, data retention 40 years at 85°C
• 5 Power Saving Modes: Halt, Auto Wake Up From Halt, Active Halt, Wait and Slow

ST72361
ON-CHIP PERIPHERALS (Cont’d)
10.2 MAIN CLOCK CONTROLLER WITH REAL TIME CLOCK MCC/RTC
The Main Clock Controller consists of three differ-
ent functions:
■
■
■
Each function can be used independently and si-
multaneously.
10.2.1 Programmable CPU Clock Prescaler
The programmable CPU clock prescaler supplies
the clock for the ST7 CPU and its internal periph-
erals. It manages SLOW power saving mode (See
Section 8.2 "SLOW MODE"
The prescaler selects the f
cy and is controlled by three bits in the MCCSR
register: CP[1:0] and SMS.
Figure 39. Main Clock Controller (MCC/RTC) Block Diagram
58/225
a programmable CPU clock prescaler
a clock-out signal to supply external devices
a real time clock timer with interrupt capability
f
OSC2
CPU
MCCSR
DIV 2, 4, 8, 16
MCO
for more details).
main clock frequen-
CP1 CP0
SMS
TB1 TB0 OIE
COUNTER
RTC
10.2.2 Clock-out Capability
The clock-out capability is an alternate function of
an I/O port pin that outputs a f
external devices. It is controlled by the MCO bit in
the MCCSR register.
10.2.3 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 depend-
ing directly on f
functionality is controlled by 4 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
"ACTIVE HALT MODE"
OIF
WATCHDOG
OSC2
TIMER
f
TO
CPU
MCC/RTC INTERRUPT
are available. The whole
for more details.
PERIPHERALS
TO CPU AND
CPU CLOCK
MCO
OSC2
clock to drive
Section 8.5