Figure 6-1. Block Diagram of 16-Bit Timer
Internal bus
16-bit timer mode control register 90
(TMC90)
P26
Output latch
TOF90CPT901 CPT900 TOC90 TCL901TCL900 TOE90
PM26
TO90/P26
16-bit compare register
90 (CR90)
TOD90
F/F
f
f
f
X
/22
X
X
/26
f
X
/27
Match
INTTM90
f
XT
Synchronization
circuit
OVF
BZO90/P21
16-bit timer counter 90
(TM90)
CTP90/INTP0
/TI81/P30
P21
Output latch
PM21
3
16-bit counter
read buffer
16-bit capture register
90 (TCP90)
Edge detector
BCS902 BCS901 BCS900BZOE90
Write controller
Write controller
Buzzer output control
register (BZC90)
fX/2
CPU clock
Internal bus
NEC [ NEC ]
