HD64570 HITACHI [Hitachi Semiconductor], HD64570 Datasheet - Page 61

• Manufacturer Part Number: HD64570
• Description: Serial Communications Adaptor
• Manufacturer: HITACHI [Hitachi Semiconductor]

Table 2.5
Symbol
D
D
*1: Not connected
0
8
*
D
1
7
D
15
*
1
CP-84
36 43
45, 47 53
Data Lines
Pin Number
FP-88
49 56
58, 60 66
Input/
Output
Input/
output
(Three-
state
Input/
output
(Three-
state)
Description
Data bus:
CPU modes 0 3
Normal mode
Reset mode
System stop
mode
Data bus:
CPU modes 0, 2, 3
Normal mode
Reset mode
System stop
mode
CPU mode 1
All modes
Input/output lines for the
8 low- order bits of the 16-bit
bidirectional data bus.
High impedance.
High impedance.
Input/output lines for the
8 high-order bits of the 16-bit
bidirectional data bus.
High impedance.
High impedance.
*1: Always high.
Rev. 0, 07/98, page 45 of 453
Leave unconnected,
or pull up to V
CC
.