HD6432160 RENESAS [Renesas Technology Corp], HD6432160 Datasheet - Page 536

• Manufacturer Part Number: HD6432160
• Description: Hitachi 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

processing using interrupts. Table 18.5 lists the conditions that set and clear GA20 (P81). Figure
18.2 shows the GA20 output in flowchart form. Table 18.6 indicates the GA20 output signal
values.
Table 18.5 GA20 (P81) Set/Clear Timing
Rev. 2.0, 08/02, page 496 of 788
Pin Name
GA20
(P81)
Rising edge of the host’s write signal
(,2:) when bit 1 of the written data is 1
and the data follows an H'D1 host
command
Setting Condition
No
No
Figure 18.2 GA20 Output
Write bit 1 of data byte
to DR bit of P81/GA20
Wait for next byte
H'D1 command
Data byte?
received?
Start
Yes
Yes
Host write
Host write
Clearing Condition
Rising edge of the host’s write signal
(,2:) when bit 1 of the written data is 0
and the data follows an H'D1 host
command
Also, when bit FGA20E in HICR is cleared
to 0