hd64338342hw Renesas Electronics Corporation., hd64338342hw Datasheet - Page 196

• Manufacturer Part Number: hd64338342hw
• Description: Renesas 8-bit Single-chip Microcomputer H8 Family/h8/300l Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

Section 6 ROM
6.3
The write, verify, and other modes are selected as shown in table 6.3 in PROM mode.
(H8/3847R)
Table 6.3
Mode
Write
Verify
Programming
disabled
Legend:
L:
H:
V
V
The specifications for writing and reading are identical to those for the standard HN27C101
EPROM. However, page programming is not supported, and so page programming mode must not
be set. A PROM programmer that only supports page programming mode cannot be used. When
selecting a PROM programmer, ensure that it supports high-speed, high-reliability byte-by-byte
programming. Also, be sure to specify addresses from H'0000 to H'EDFF.
6.3.1
An efficient, high-speed, high-reliability method is available for writing and verifying the PROM
data. This method achieves high speed without voltage stress on the device and without lowering
the reliability of written data. The basic flow of this high-speed, high-reliability programming
method is shown in figure 6.4.
Rev. 6.00 Aug 04, 2006 page 160 of 680
REJ09B0145-0600
PP
CC
:
:
Low level
High level
V
V
PP
CC
Programming (H8/3847R)
Writing and Verifying
level
level
Mode Selection in PROM Mode (H8/3847R)
Pins
CE
CE
L
L
L
L
H
H
CE
CE
OE
OE
OE
OE
H
L
L
H
L
H
PGM
PGM
PGM
PGM
L
H
L
H
L
H
V
V
V
V
PP
PP
PP
PP
V
V
V
V
CC
CC
CC
CC
EO
Data input
Data output
High impedance Address input
7
to EO
0
EA
Address input
Address input
16
to EA
0