hd66100 Renesas Electronics Corporation., hd66100 Datasheet - Page 257

• Manufacturer Part Number: hd66100
• Description: H8/3867 Series
• Manufacturer: Renesas Electronics Corporation.

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
4. Register configuration
Table 9.20 shows the register configuration of the asynchronous event counter.
Table 9.20 Asynchronous Event Counter Registers
Name
Event counter control/status register
Event counter H
Event counter L
Clock stop register 2
9.7.2
1. Event counter control/status register (ECCSR)
ECCSR is an 8-bit read/write register that controls counter overflow detection, counter resetting,
and halting of the count-up function.
ECCSR is initialized to H'00 upon reset.
242
Bit
Initial Value
Read/Write
Note: * Bits 7 and 6 can only be written with 0, for flag clearing.
Register Descriptions
R/W*
OVH
0
7
R/W*
OVL
0
6
Abbrev.
AEVH
AEVL
R/W
—
5
0
Abbrev.
ECCSR
ECH
ECL
CKSTP2
I/O
Input
Input
CH2
R/W
4
0
Function
Event input pin for input to event counter H
Event input pin for input to event counter L
R/W
R/W
R
R
R/W
CUEH
R/W
0
3
CUEL
Initial Value
H'00
H'00
H'00
H'FF
R/W
2
0
CRCH
R/W
0
1
Address
H'FF95
H'FF96
H'FF97
H'FFFB
CRCL
R/W
0
0