HD6433308 HITACHI [Hitachi Semiconductor], HD6433308 Datasheet - Page 255

• Manufacturer Part Number: HD6433308
• Description: Hitachi Single-Chip MicroComputer
• Manufacturer: HITACHI [Hitachi Semiconductor]

13.3 Programming
The write, verify, inhibited, and read sub-modes of the PROM mode are selected as shown in Table
13-4.
Table 13-4. Selection of Sub-Modes in PROM Mode
Sub-mode
Write
Verify
Programming inhibited
Note: The V
The H8/330 PROM uses the same, standard read/write specifications as the HN27C256 and
HN27256.
13.3.1 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
Address in MCU mode
and V
CC
pins must be held at the V
CE
Low
High
High
Figure 13-3. Memory Map in PROM Mode
H'0000
H'3FFF
OE
High
Low
High
"1" output *
On-chip
PROM
V
V
V
V
PP
PP
PP
PP
245
PP
Address in PROM mode
H'0000
H'3FFF
H'7FFF
* If this area is read in PROM mode,
and V
V
V
V
V
the output data are H'FF.
CC
CC
CC
CC
Pins
CC
voltage levels.
EO
Data input
Data output
High-impedance
7
– EO
0
EA
Address input
Address input
Address input
14
– EA
0