M16C80 Datasheet, PDF (308/358 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/80 SERIES

M16C/80 Group
32. Standard serial I/O mode
Software Commands
Table 31.1 lists software commands. In the standard serial I/O mode 1, erase operations, programs and
reading are controlled by transferring software commands via the RxD1 pin. Software commands are
explained here below.
Table 32.1 Software commands (Standard serial I/O mode 1)
Control command
1 Page read
1st byte
transfer
2nd byte
Address
FF16 _(middle)
3rd byte
Address
(high)
4th byte 5th byte 6th byte
Data
output
Data Data
Data
output output output to
259th byte
When ID is
not verified
Not
acceptable
2 Page program
Address Address Data
4116 _{(middle) (high)}
input
Data
input
Data
input
Data input
Not
to 259th acceptable
byte
3 Block erase
4 Erase all unlocked blocks
5 Read status register
6 Clear status register
7 Read lock bit status
2016
A716
7016
5016
7116
Address
(middle)
D016
SRD
output
Address
(middle)
Address D016
(high)
SRD1
output
Address Lock bit
(high) data
output
Not
acceptable
Not
acceptable
Acceptable
Not
acceptable
Not
acceptable
8 Lock bit program
Address Address D016
7716 _{(middle) (high)}
9 Lock bit enable
7A16
10 Lock bit disable
11 Code processing function
12 Download function
13 Version data output function
14 Boot ROM area output
function
15 Read check data
7516
F516
Address
(low)
FA16 _{Size (low)}
Version
FB16 _data
output
Address
FC16 _(middle)
Check
FD16 _{data (low)}
Address
(middle)
Size
(high)
Version
data
output
Address
(high)
Check
data
(high)
Address
(high)
Check-
sum
Version
data
output
Data
output
ID size ID1
To
Data required
input number
of times
Version Version
data data
output output
Data Data
output output
To ID7
Version
data
output to
9th byte
Data
output to
259th
byte
Not
acceptable
Not
acceptable
Not
acceptable
Acceptable
Not
acceptable
Acceptable
Not
acceptable
Not
acceptable
Note 1: 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.
Note 2: SRD refers to status register data. SRD1 refers to status register data1 .
Note 3: All commands can be accepted when the flash memory is totally blank.
Rev.1.00 Aug. 02, 2005 ^{Page 297} of 329
REJ09B0187-0100