HD6473887 Datasheet, PDF (258/523 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

2. Block diagram
Figure 9-18 shows a block diagram of the asynchronous event counter.
ECCSR
IRREC
AEVH
AEVL
OVH
ECH _CK
OVL
ECL _CK
Notation:
ECCSR : Event counter control/status register
ECH : Event counter H
ECL : Event counter L
AEVH : Asynchronous event input H
AEVL : Asynchronous event input L
IRREC : Event counter overflow interrupt request flag
Figure 9-18 Block Diagram of Asynchronous Event Counter
3. Pin configuration
Table 9-19 shows the asynchronous event counter pin configuration.
Table 9-19 Pin Configuration
Name
Asynchronous event input H
Asynchronous event input L
Abbrev. I/O
AEVH Input
AEVL Input
Function
Event input pin for input to event counter H
Event input pin for input to event counter L
241