UPD784938 Datasheet, PDF (274/733 Pages) NEC – 16-Bit Single-Chip Microcontrollers

Figure 10-1. Timer/Event Counter 1 Block Diagram
Internal bus
1/8
8/16
External interrupt
mode register 0 ^{ES31 ES30}
(INTM0)
P21/INTP0
Edge
detection
circuit
Compare register
(CR10/CR10W)
8 _{Match 16}
8/16
8
INTP0
Match ^Selector
16
Capture/compare
register
(CR11/CR11W)
fXX /1,024
fXX /512
fXX /256
fXX
Prescaler ^{fXX /128}
fXX /64
Capture trigger
Selector
fXX /32
fXX /16
fXX /8
fXX /4
Capture trigger
Prescaler
mode register 1 PRS23 PRS22 PRS21 PRS20
(PRM1)
8
8
Match
16
8
16
Match
16
Timer counter 1
(TM1/TM1W)
16
Capture register
(CR12/CR12W)
8/16
8/16
8
Capture/compare
CLR11 CM CLR10 _{control register 1 (CRC1)}
INTC10
Clear
RESET
Selector
CM
Overflow
Real-time output port
INTC11
Timer control
register 1 (TMC1)
CE1 OVF1 BW1
1/8
Internal bus