st72321j STMicroelectronics, st72321j Datasheet - Page 68

• Manufacturer Part Number: st72321j
• Description: 8-bit Mcu With Nested Interrupts, Flash, 10-bit Adc, 5 Timers, Spi, Sci, I2c Interface
• Manufacturer: STMicroelectronics

ST72321J
16-BIT TIMER (Cont’d)
Figure 40. Timer Block Diagram
68/179
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
DETECT
CIRCUIT
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