HD64F2149 Datasheet, PDF (642/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

Table 18B.4 Fast A20 Gate Output Signals
HA0 Data/Command
Internal CPU
Interrupt Flag
(IBF)
1
H'D1 command
0
0
1 data*¹
0
1
H'FF command
0
1
H'D1 command
0
0
0 data*²
0
1
H'FF command
0
1
H'D1 command
0
0
1 data*¹
0
1/0 Command other than H'FF and 1
H'D1
1
H'D1 command
0
0
0 data*²
0
1/0 Command other than H'FF and 1
H'D1
1
H'D1 command
0
1
Command other than H'D1
1
1
H'D1 command
0
1
H'D1 command
0
1
H'D1 command
0
0
Any data
0
1
H'D1 command
0
Notes: 1. Arbitrary data with bit 1 set to 1.
2. Arbitrary data with bit 1 cleard to 0.
GA20
(P81)
Q
1
Q (1)
Q
0
Q (0)
Q
1
Q (1)
Remarks
Turn-on sequence
Turn-off sequence
Turn-on sequence
(abbreviated form)
Q
0
Q (0)
Turn-off sequence
(abbreviated form)
Q
Q
Q
Q
Q
1/0
Q (1/0)
Cancelled sequence
Retriggered sequence
Consecutively executed
sequences
608