M30222 Datasheet, PDF (230/237 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

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MITSUBISHI MICROCOMPUTERS
M30222 Group
Rev. G
Serial I/O Mode 2 (Flash Memory Version)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
(5) Read Status Register Command
This command reads status information. When the “7016” command code is sent with the 1st byte, the con-
tents of the status register (SRD) specified with the 2nd byte and the contents of status register 1 (SRD1)
specified with the 3rd byte are read.
RxD1
(M16C receive data)
7016
TxD1
(M16C transmit data)
Figure 1.188. Timing for reading the status register
SRD SRD1
output output
(6) Clear Status Register Command
This command clears the bits (SR3–SR5) which are set when the status register operation ends in error.
When the “5016” command code is sent with the 1st byte, bits SR3-SR5 are cleared.
When the clear status register operation ends, the RTS1 (BUSY) signal changes from the "H" to the "L" level.
RxD1
(M16C receive data)
TxD1
(M16C transmit data)
Figure 1.189. Timing for clearing the status register
5016
(7) Read Lock Bit Status Command
This command reads the lock bit status of the specified block. To execute the lock bit status command:
(1) Transfer the "7116" command code with the 1st byte.
(2) Transfer addresses A8 to A15 and A16 to A23 with the 2nd and 3rd bytes respectively.
(3) The lock bit data of the specified block is output with the 4th byte. Write the highest address of the speci-
fied block for address A8 to A23.
RxD1
(M16C receive data)
TxD1
(M16C transmit data)
Figure 1.190. Timing for lock bit status
7116
A8 to A16 to
A15
A23
D016
1-231