HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 578

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 16 ROM
16.5
16.5.1
Table 16.5 shows how to select the program, verify, and program-inhibit modes in PROM mode.
Table 16.5 Mode Selection in PROM Mode
Mode
Program
Verify
Program-inhibit
Legend:
L:
H: High voltage level
V
V
Programming and verification should be carried out using the same specifications as for the
standard HN27C101 EPROM.
However, do not set the PROM programmer to page mode does not support page programming. A
PROM programmer that only supports page programming cannot be used. When choosing a
PROM programmer, check that it supports high-speed programming in byte units. Always set
addresses within the range H'00000 to H'1FFFF.
16.5.2
An efficient, high-speed programming procedure can be used to program and verify PROM data.
This procedure writes data quickly without subjecting the chip to voltage stress or sacrificing data
reliability. It leaves the data H'FF in unused addresses. Figure 16.4 shows the basic high-speed
programming flowchart. Tables 16.6 and 16.7 list the electrical characteristics of the chip during
programming. Figure 16.5 shows a timing chart.
Rev.3.00 Mar. 26, 2007 Page 536 of 772
REJ09B0355-0300
PP
CC
: V
: V
Low voltage level
PP
CC
voltage level
voltage level
Programming
Overview
Programming and Verification
CE
CE
CE
CE
L
L
L
L
H
H
OE
OE
OE
OE
H
L
L
H
L
H
PGM
PGM V
PGM
PGM
L
H
L
H
L
H
V
V
V
PP
PP
PP
PP
V
V
V
V
CC
CC
CC
CC
Pins
EO
Data input
Data output
High impedance
7
to EO
0
EA
Address input
Address input
Address input
16
to EA
0