HD64570 Datasheet, PDF (444/469 Pages) Hitachi Semiconductor – Serial Communications Adaptor

Register
Timer (Channel 0)
Timer Expand Prescale
Register Channel 0:
TEPR Channel 0
Address
CPU CPU
Mode Mode
0, 1 2, 3 Remarks
7
65H 64H Bit name
—
Read/Write
—
Initial value
0
6
5
4
3
2
1
0
— — — — ECKS2 ECKS1 ECKS0
— — — — R/W R/W R/W
0
0
0
0
0
0
0
Not used
66H
Not used
67H
Timer (Channel 1)
Timer up-counter Channel 68H
1: TCNTL Channel 1
67H
66H
69H
Read/write
Initial value
Expand clock input select
000: BC
001: BC/2
010: BC/4
011: BC/8
100: BC/16
101: BC/32
110: BC/64
111: BC/128
7
6
5
4
3
2
1
0
R/W R/W R/W R/W R/W R/W R/W R/W
0
0
0
0
0
0
0
0
Timer up-counter Channel 69H 68H
1: TCNTH Channel 1
15 14 13 12 11 10
9
8
Read/Write
Initial value
R/W R/W R/W R/W R/W R/W R/W R/W
0
0
0
0
0
0
0
0
Timer Constant Register
Channel 1: TCONRL
Channel 1
Timer Constant Register
Channel 1: TCONRH
Channel 1
6AH 6BH
6BH
6AH
Read/Write
Initial value
Read/write
Initial value
7
6
5
4
3
2
1
0
WWWWWWWW
1
1
1
1
1
1
1
1
15 14 13 12 11 10
9
8
WWWWWWWW
1
1
1
1
1
1
1
1
Rev. 0, 07/98, page 428 of 453