Hitachi HD64411 Q2 User Manual page 21

Table 2-1 Pin Functions (cont)
T y p e Symbol Pin
CPU A20 60
interface A21
61
A22 62
D0 2
D1 3
D2 5
D3 7
D4 8
D5 9
D6 10
D7 11
D8 13
D9 14
D10 15
D11 17
D12 18
D13 20
D14 21
D15 22
CS0
26
CS1
27
RD
28
WE0
29
WE1
30
DACK
31
DREQ
1
WAIT
144
IRL
143
14
No. I / O Function
Input CPU address 20
Input CPU address 21
Input CPU address 22
Input/output CPU data 0
Input/output CPU data 1
Input/output CPU data 2
Input/output CPU data 3
Input/output CPU data 4
Input/output CPU data 5
Input/output CPU data 6
Input/output CPU data 7
Input/output CPU data 8
Input/output CPU data 9
Input/output CPU data 10
Input/output CPU data 11
Input/output CPU data 12
Input/output CPU data 13
Input/output CPU data 14
Input/output CPU data 15
Input Chip select 0 (UGM)
Input Chip select 1 (internal
registers)
Input Read strobe
Input Write pulse 0
Input Write pulse 1
Input DMA acknowledge
Output DMA request
Output CPU wait
Output Interrupt request
N o t e s
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F
3V/5V-CPU I/F