M16C62 Datasheet, PDF (214/231 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Appendix Standard Serial I/O Mode
Mitsubishi microcomputers
M16C / 62 Group (80-pin)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Software Commands
Table 1.25.1 lists software commands. In the standard serial I/O mode, erase operations, programs and
reading are controlled by transferring software commands via the RxD pin. Software commands are
explained here below.
Table 1.25.1. Software commands (Standard serial I/O mode)
Control command
1 Page read
2 Page program
FF16
4116
3 Block erase
4 Erase all unlocked blocks
5 Read status register
6 Clear status register
7 Read lockbit status
2016
A716
7016
5016
7116
8 Lockbit program
9 Lockbit enable
10 Lockbit disable
11 ID check function
12 Download function
7716
7A16
7516
F516
FA16
13 Version data output function _FB16
14 Boot area output function _FC16
2nd byte
Address
(middle)
Address
(middle)
Address
(middle)
D016
SRD
output
Address
(middle)
Address
(middle)
Address
(low)
Size
(low)
Version
data
output
Address
(middle)
3rd byte
Address
(high)
Address
(high)
Address
(high)
SRD1
output
Address
(high)
Address
(high)
Address
(middle)
Size
(high)
Version
data
output
Address
(high)
4th byte
Data
output
Data
input
D016
5th byte
Data
output
Data
input
6th byte
Data
output
Data
input
Data
output to
259th
byte
Data input
to 259th
byte
When ID is
not verificate
Not
acceptable
Not
acceptable
Not
acceptable
Not
acceptable
Acceptable
Lock bit
data
output
D016
Address
(high)
Check-
sum
Version
data
output
Data
output
Not
acceptable
Not
acceptable
ID size ID1
To ID7
Not
acceptable
Not
acceptable
Not
acceptable
Acceptable
Data To
Not
input required
acceptable
number
of times
Version Version Version Acceptable
data data data output
output output to 9th byte
Data Data
Data
Not
output output output to acceptable
259th byte
Note1: Shading indicates transfer from flash memory microcomputer to peripheral unit. All other data is trans-
ferred from the peripheral unit to the flash memory microcomputer.
Note2: SRD refers to status register data. SRD1 refers to status register 1 data.
Note3: All commands can be accepted when the flash memory is totally blank.
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