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EM78P468N/EM78P468L
8-Bit Microcontroller
Product Specification (V1.5) 02.15.2007
• 11
(This specification is subject to change without further notice)
6.1.11 RA/LCD_ADDR (LCD Address)
(Address: 0Ah)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0 0 0 LCD_A4 LCD_A3 LCD_A2 LCD_A1 LCD_A0
Bits 7~5: Not used, fixed to “0”
Bits 4~0 (LCDA4 ~ LCDA0): LCD RAM addresses
RB (LCD Data Buffer)
RA
(LCD Address)
Bits 7 ~4
Bit 3
(LCD_D3)
Bit 2
(LCD_D2)
Bit 1
(LCD_D1)
Bit 0
(LCD_D0)
Segment
00H − − − − − SEG0
01H − − − − − SEG1
02H − − − − − SEG2
| | |
1DH − − − − − SEG29
1EH − − − − − SEG30
1FH − − − − − SEG31
Common × COM3 COM2 COM1 COM0
6.1.12 RB/LCD_DB (LCD Data Buffer)
(Address: 0Bh)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
− − − − LCD_D3 LCD_D2 LCD_D1 LCD_D0
Bits 7~4: Not used
Bits 3~0 (LCD_D3 ~ LCD_D0) : LCD RAM data transfer register
6.1.13 RC/CNTER (Counter Enable Register)
(Address: 0Ch)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
− − − − LPWTEN HPWTEN CNT2EN CNT1EN
Bits 7, 5: Not used, must be fixed to “0”
Bits 6, 4: Not used
Bit 3 (LPWTEN): low pulse width timer enable bit
LPWTEN = “0” : Disable LPWT. Stop counting operation.
LPWTEN = “1” : Enable LPWT. Start counting operation.
Bit 2 (HPWTEN): high pulse width timer enable bit
HPWTEN = “0” : Disable HPWT. Stop counting operation.
HPWTEN = “1” : Enable HPWT. Start counting operation.