hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 608

• Manufacturer Part Number: hd64338023s
• Description: Renesas 8-bit Single-chip Microcomputer Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

Appendix B Internal I/O Registers
ECCSR—Event Counter Control/Status Register
Bit
Initial value
Read/Write
Rev. 7.00 Mar 10, 2005 page 566 of 652
REJ09B0042-0700
Counter Overflow H
0
1
OVH
R/W
ECH has not overflowed
ECH has overflowed
7
0
OVL
R/W
Counter Overflow L
0
1
6
0
ECL has not overflowed
ECL has overflowed
R/W

5
0
Channel Select
0
1
CH2
R/W
4
0
ECH and ECL are used together as a single-
channel 16-bit event counter
ECH and ECL are used as two independent
8-bit event counter channels
Count-up Enable H
0
1
CUEH
Count-up Enable L
R/W
0
1
ECH event clock input is disabled.
ECH value is held
ECH event clock input is enabled
3
0
Counter Reset Control H
0
1
ECL event clock input is disabled.
ECL value is held
ECL event clock input is enabled
H'95
ECH is reset
ECH reset is cleared and
count-up function is enabled
CUEL
R/W
Counter Reset Control L
2
0
0
1
ECL is reset
ECL reset is cleared
and count-up function
is enabled
CRCH
R/W
1
0
CRCL
R/W
0
0
AEC