em78p468l ELAN Microelectronics Corp, em78p468l Datasheet - Page 17

• Manufacturer Part Number: em78p468l
• Description: 8-bit Microcontroller
• Manufacturer: ELAN Microelectronics Corp

Product Specification (V1.5) 02.15.2007
(This specification is subject to change without further notice)
6.1.11 RA/LCD_ADDR (LCD Address)
6.1.12 RB/LCD_DB (LCD Data Buffer)
6.1.13 RC/CNTER (Counter Enable Register)
Bits 7~5: Not used, fixed to “0”
Bits 4~0 (LCDA4 ~ LCDA0): LCD RAM addresses
Bits 7~4: Not used
Bits 3~0 (LCD_D3 ~ LCD_D0) : LCD RAM data transfer register
Bits 7, 5: Not used, must be fixed to “0”
Bits 6, 4: Not used
Bit 3 (LPWTEN): low pulse width timer enable bit
Bit 2 (HPWTEN): high pulse width timer enable bit
(LCD Address) Bits 7 ~4
Bit 7
Bit 7
Bit 7
Common
0
−
−
(Address: 0Ah)
(Address: 0Bh)
(Address: 0Ch)
LPWTEN = “0” : Disable LPWT. Stop counting operation.
LPWTEN = “1” : Enable LPWT. Start counting operation.
HPWTEN = “0” : Disable HPWT. Stop counting operation.
HPWTEN = “1” : Enable HPWT. Start counting operation.
1DH
1EH
00H
01H
02H
1FH
RA
|
Bit 6
Bit 6
Bit 6
0
−
−
×
−
−
−
−
−
−
Bit 5
Bit 5
Bit 5
0
−
−
(LCD_D3)
COM3
Bit 3
−
−
−
−
−
−
RB (LCD Data Buffer)
LCD_A4
Bit 4
Bit 4
Bit 4
−
−
(LCD_D2)
COM2
Bit 2
−
−
−
−
−
−
|
LPWTEN HPWTEN
LCD_A3
LCD_D3
Bit 3
Bit 3
Bit 3
(LCD_D1)
COM1
Bit 1
−
−
−
−
−
−
EM78P468N/EM78P468L
LCD_D2
LCD_A2
Bit 2
Bit 2
Bit 2
(LCD_D0)
COM0
Bit 0
8-Bit Microcontroller
−
−
−
−
−
−
CNT2EN
LCD_D1
LCD_A1
Bit 1
Bit 1
Bit 1
Segment
SEG29
SEG30
SEG31
SEG0
SEG1
SEG2
CNT1EN
LCD_A0
LCD_D0
Bit 0
|
Bit 0
Bit 0
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