M30222 Datasheet, PDF (218/237 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

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Specifications in this manual are tentative and subject to change
MITSUBISHI MICROCOMPUTERS
M30222 Group
Rev. G
Serial I/O Mode 1 (Flash Memory Version)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
(16) Word Read Program
This command reads the word from the specific address. To execute the word read command:
(1) Transfer the "FE16" command code with the 1st byte.
(2) Transfer the 3 byte address starting with the A0-A8 with the next 3 bytes.
(3) The MCU transfers the byte at the specific address.
(4) The MCU transfers the byte at the specific address +1.
Note: The specified address may be odd or even (A0=0 or 1) and be any value withing the 1M address
space.
CLK0
RxD0
TxD0
FE16
Address Address Address
Low Middle High
1st half 2nd half
of word of word
RTS0(BUSY)
Fig. 1.178. Timimg for the word read program
(17) Word Program
This command writes the word in the flash memory. To execute the word program command:
(1) Transfer the "4016" with the 1st byte.
(2) Transfer the 3 byte address starting with the A0-A8 with the next 3 bytes.
(3) Transfer the 1st half of the word to be written in the lower address (A0=0).
(4) Transfer the 2nd half of the word to be written in the higher address (A0=1).
Note: The specified address must be even (A0=0).
CLK0
RxD0
TxD0
RTS0(BUSY)
4016
Address Address Address 1st half ^{2nd half}
Low
Middle
High of word ^{of word}
Figure 1.179. Timing for the word program
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