7641_06 Datasheet, PDF (114/385 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCOMPUTER

7641 Group
HARDWARE
FLASH MEMORY MODE
Software Commands (Standard Serial I/O
Mode)
Table 14 lists software commands. In standard serial I/O mode,
erase, program and read are controlled by transferring software
commands via the SRXD pin. Software commands are explained
here below.
Table 14 Software commands (Standard serial I/O mode)
Control command
1st byte 2nd byte 3rd byte 4th byte 5th byte 6th byte
.....
transfer
When ID is
not verified
1 Page read
2 Page program
3 Block erase
4 Erase all blocks
5 Read status register
6 Clear status register
7 ID code check
8 Download function
FF16
4116
2016
A716
7016
5016
F516
FA16
Address Address
(middle) (high)
Address Address
(middle) (high)
Address
(middle)
D016
Address
(high)
SRD
output
SRD1
output
Data
output
Data
input
D016
Address
(low)
Size
(low)
Address
(middle)
Size
(high)
Address
(high)
Check-
sum
Data
output
Data
input
ID size
Data
input
Data
output
Data
input
Data
output to
259th byte
Data input
to 259th
byte
ID1
To
required
number
of times
To ID7
Not
acceptable
Not
acceptable
Not
acceptable
Not
acceptable
Acceptable
Not
acceptable
Acceptable
Not
acceptable
FB16
Version Version Version Version Version
Version
Acceptable
9 Version data output function
data
data
data
data
data data output
output output output output output to 9th byte
10 Boot ROM area output
function
FC16
Address Address
(middle) (high)
Data
output
Data
output
Data
output
Data
output to
259th byte
Not
acceptable
Notes1: Shading indicates transfer from the internal flash memory microcomputer to a programmer. All other data is transferred from an external equipment
(programmer) to the internal flash memory microcomputer.
2: SRD refers to status register data. SRD1 refers to status register 1 data.
3: All commands can be accepted for the products of which boot ROM area is totally blank.
4: Address low is AB0 to AB7; Address middle is AB8 to AB15; Address high is AB16 to AB23.
Rev.2.00 Aug 28, 2006 page 97 of 113
REJ09B0336-0200