hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 189
hd64338023s
Manufacturer Part Number
hd64338023s
Description
Renesas 8-bit Single-chip Microcomputer Super Low Power Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.HD64338023S.pdf
(697 pages)
- Current page: 189 of 697
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6.3
The write, verify, and other modes are selected as shown in table 6.2 in H8/38024 PROM mode.
Table 6.2
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'7FFF.
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.
PP
CC
:
:
Low level
High level
V
V
PP
CC
Writing and Verifying
H8/38024 Programming
level
level
Mode Selection in PROM Mode (H8/38024)
C E
L
L
L
L
H
H
O E
H
L
L
H
L
H
P G M
L
H
L
H
L
H
V
V
V
V
PP
PP
PP
PP
V
V
V
V
CC
CC
CC
CC
Pins
Rev. 7.00 Mar 10, 2005 page 147 of 652
EO
Data input
Data output
High impedance
7
to EO
0
REJ09B0042-0700
Section 6 ROM
EA
Address input
Address input
Address input
16
to EA
0
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