M35053 Datasheet, PDF (21/47 Pages) Mitsubishi Electric Semiconductor – SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS

MITSUBISHI MICROCOMPUTERS
M35053-XXXSP/FP
SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS
SERIAL DATA INPUT TIMING
(1) The address consists of 16 bits.
(2) The data consists of 16 bits.
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(3) The 16 bits in the SCK after the CS signal has fallen are the ad-
dress, and for succeeding input data, the address is incremented
every 16 bits.
CS
SCK
SIN
LSB
MSB LSB
MSB LSB
MSB
Address (16 bit)
Data N (16 bit)
Data N+1 (16 bit)
N=1, 2, 3
Fig. 10 Serial input timing
Output timing of decode data
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(1) Setting “1” in the W/R register activates output mode.
(2) Outputs decode data in 16 clocks of the SCK after switching over
to output mode. (Don’t enter the SCK for more than 16 clocks.)
__
(3) Raising the CS signal deactivates output mode.
__
(To switch over to input mode, cause CS to fall.)
(4) If no data are present, or if data have already been read, 000016
is output.
CS
SCK
1
2 ^... 15 16
SIN
MSB MSB
LSB LSB
Data (16 bit)
(Register W/R = “1”)
Fig. 11 Decode data output timing
Decode data (16 bit)
Address (16 bit)
Output mode
When register MB/LB (Address F5 16) = “0”
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