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| 3822_03 Datasheet, PDF (246/328 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCOMPUTER | |||
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APPLICATION
2.7 LCD drive control circuit
RESET
Initialization
CLT
CLD
SEI
SEG (Address 3816)
LM (Address 3916)
P0D (Address 0116)
P1D (Address 0316)
PULLA (Address 1616)
â000000012
â110000112
âXXXXXXXX2
âXXXXXXXX2
âXXXXXXXX2
LCDRAM0 (Address 4016)â111111112
LCDRAM1 (Address 4116)â111111112
LCDRAM2 (Address 4216)â111111112
LCDRAM3 (Address 4316)â111111112
LCDRAM4 (Address 4416)â011111112
LCDRAM5 (Address 4516)â011111112
LCDRAM6 (Address 4616)â111111112
LM (Address 3916), bit 3 â1
CLI
All interrupts; Disabled
Set ports/segments
Set LCD mode register
Set port P0 I/O direction
Set port P1 I/O direction
Set pull-up, pull-down
VSet in the order of port P0/P1 direction
registers and PULL register A
Set values in LCDRAMX
(Set it to â1â to turn on or to â0â to turn it off)
Turn on LCD
Interrupts; Enabled
When switching LCD ON (OFF)
segments
LCDRAMX (Address 4X16) âXXXXXXXX2 Rewrite bits corresponding to LCD ON (OFF) segments
Fig. 2.7.14 Control procedure
2â180
3822 GROUP USERâS MANUAL
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