HD6475328-CP10 HITACHI [Hitachi Semiconductor], HD6475328-CP10 Datasheet - Page 311

• Manufacturer Part Number: HD6475328-CP10
• Description: original Hitachi CMOS microcomputer unit (MCU)
• Manufacturer: HITACHI [Hitachi Semiconductor]

17.3 Programming
The write, verify, and inhibited sub-modes of the PROM mode are selected as shown in
table 17-4.
Table 17-4 Selection of Sub-Modes in PROM Mode
Mode
Write
Verify
Programming inhibited
Note: The V
The H8/532 PROM uses the same, standard read/write specifications as the HN27C256 and
HN27256.
17.3.1 Writing and Verifying
An efficient, high-speed programming procedure can be used to write and verify PROM data.
This procedure writes data quickly without subjecting the chip to voltage stress and without
sacrificing data reliability. It leaves the data H'FF written in unused addresses.
PP
and V
Address in MCU mode
CC
pins must be held at the V
CE
Low
High
High
Figure 17-3 Memory Map in PROM Mode
H'7FFF
H'0000
OE
High
Low
High
On-chip ROM
V
V
V
V
PP
PP
PP
PP
299
V
V
V
V
PP
CC
CC
CC
CC
and V
Address in PROM mode
Pins
CC
0
Data input
Data output
High-impedance
7
voltage levels.
to 0
H'7FFF
H'0000
0
A
Address input
Address input
Address input
14
to A
0