
66
3850 Group (Spec. H/A)
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
Software Commands (Standard Serial I/O
Mode)
Table 15 lists software commands. In standard serial I/O mode,
erase, program and read are controlled by transferring software
2nd byte
Address
(middle)
3rd byte
Address
(high)
4th byte
Data
output
5th byte
Data
output
6th byte
Data
output
.....
Data
output to
259th byte
Data input
to 259th
byte
FF
16
When ID is
not verified
1st byte
transfer
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 when the flash memory is totally blank.
4:
Address high must be
“
00
16
”
.
commands via the RxD pin. Software commands are explained
here below.
Table 15 Software commands (Standard serial I/O mode)
1
Page read
41
16
Address
(middle)
Address
(high)
Data
input
Data
input
Data
input
Not
acceptable
Not
acceptable
A7
16
D0
16
70
16
SRD
output
SRD1
output
Acceptable
50
16
Not
acceptable
F5
16
Address
(low)
Address
(middle)
Address
(high)
ID size
ID1
To ID7
Acceptable
FA
16
Data
input
To
required
number
of times
Not
acceptable
FB
16
Version
data
output
Version
data
output
Version
data
output
Version
data
output
Version
data
output
Version
data output
to 9th byte
Control command
2
Page program
3
Erase all blocks
4
Read status register
5
Clear status register
6
ID code check
7
Download function
8
Version data output function
Size
(low)
Size
(high)
Check-
sum
Acceptable
Not
acceptable