ST72321R6 STMicroelectronics, ST72321R6 Datasheet - Page 70

• Manufacturer Part Number: ST72321R6
• Description: 8-BIT MCU WITH NESTED INTERRUPTS, FLASH,10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C INTERFACE
• Manufacturer: STMicroelectronics

Specifications of ST72321R6

• Hdflash Endurance: 100 cycles, data retention
• Clock Sources: crystal/ceramic resonator oscillators, internal RC oscillator, clock security system 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, external clock input on one timer, PWM and pulse generator modes
• 8-bit Pwm Auto-reload Timer With: 2 input captures, 4 PWM outputs, output compare and time base interrupt, external clock with event detector

ST72321Rx ST72321ARx ST72321Jx
16-BIT TIMER (Cont’d)
Figure 42. Timer Block Diagram
70/193
EXTCLK
pin
TIMER INTERRUPT
f
CPU
ICIE
ICF1
CC[1:0]
OCIE TOIE
OCF1 TOF
1/2
1/4
1/8
EXEDG
(See note)
8 high
OVERFLOW
CIRCUIT
DETECT
FOLV2
ICF2
(Control/Status Register)
ALTERNATE
REGISTER
REGISTER
COUNTER
COUNTER
FOLV1
(Control Register 1) CR1
OCF2
buffer
8-bit
TIMD
OLVL2
8 low
16
OUTPUT COMPARE
16
IEDG1
0
CIRCUIT
REGISTER
COMPARE
CSR
OUTPUT
0
MCU-PERIPHERAL INTERFACE
TIMER INTERNAL BUS
OLVL1
Note: If IC, OC and TO interrupt requests have separate vectors
then the last OR is not present (See device Interrupt Vector Table)
8
1
6
ST7 INTERNAL BUS
16
8
OC1E
16
COMPARE
REGISTER
OUTPUT
OC2E OPM
8
2
8
REGISTER
CAPTURE
EDGE DETECT
EDGE DETECT
PWM
INPUT
CIRCUIT1
CIRCUIT2
8
1
CC1
(Control Register 2) CR2
LATCH1
LATCH2
8
16
CC0
REGISTER
CAPTURE
INPUT
8
IEDG2
2
16
8
EXEDG
OCMP1
OCMP2
ICAP1
ICAP2
pin
pin
pin
pin