HD6475328-CP10 HITACHI [Hitachi Semiconductor], HD6475328-CP10 Datasheet - Page 238

• Manufacturer Part Number: HD6475328-CP10
• Description: original Hitachi CMOS microcomputer unit (MCU)
• Manufacturer: HITACHI [Hitachi Semiconductor]

Contention between TCOR Write and Compare-Match: If a compare-match occurs during the
T
match signal is inhibited.
Figure 11-11 shows this type of contention.
Contention between Compare-Match A and Compare-Match B: If identical time constants
are written in TCORA and TCORB, causing compare-match A and B to occur simultaneously,
any conflict between the output selections for compare-match A and B is resolved by following
the priority order in table 11-4.
3
state of a write cycle to TCORA or TCORB, the write takes precedence and the compare-
Figure 11-11 Contention between TCOR Write and Compare-Match
ø
Internal address
bus
Internal write
signal
TCNT
TCORA or
TCORB
Compare-match
A or B signal
Write cycle: CPU writes to TCORA
or TCORB
T
1
N
N
TCNT address
222
T
2
T
3
TCOR write
data
M
N + 1
Inhibited