EM78815
8-Bit Microcontroller
Rated Value
Symbol
Applicable Pins
Unit
Min.
Max.
Tah
Taw
Tcyc
Tcc
A0
0
0
-
-
A0
A0
150
60
20
10
-
-
WR/RD
D0 ~D7
D0 ~D7
D0 ~D7
D0 ~D7
-
ns
Tds
Tdh
Tacc
Toh
-
-
60
40
10
Tah : Address hold time
Taw : Address set-up time
Tcyc : System cycle time
Tcc : Pulse width
Tds : Data set-up time
Tdh : Data hold time
Tacc : Read access time
Toh : Output disable time
User can operate in coordination with the on-chip Data ROM address automatic
increase function to write a large number of data from the internal Data ROM to the
external LCD RAM.
Example ( To collocate EM9L8580 LCD driver ):
START:
MOV A , @0x0C;
IOW IOC5_PAGE0
;Set Data ROM address automatic increase
;after read/write data
MOV A , @0x09
IOW IOCB_PAGE1
;External LCD driver Chip 1 Instruction mode
;select
MOV A , @0xB0;
MOV RB_PAGE0 , A ;Set external LCD driver start address Page 0
MOV A , @0x10
MOV RB_PAGE0 , A
MOV A , @0x00
MOV RB_PAGE0 , A
MOV A , @0x00;
; Set external LCD driver start address Column 0
54 •
Product Specification (V2.4) 02.17.2006
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
