EM78P911A
8-bit Micro-controller
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* This specification is subject to change without notice.
~ ~
12
12/19/2005 (V2.1)
LCD_C2,LCD_C1 LCD Display Control
LCD_M duty bias
0 0
change duty
Disable(turn off LCD)
0
1
1/16 1/4
1/8 1/4
0 1
Blanking
:
:
1 1
LCD display enable
:
:
* Bit3 (/WURING, RING Wake Up Enable): used to enable the wake-up function of /RINGTIME input pin.
(1/0=enable/disable)
* Bit4 (/WUP9L, PORT9 low nibble Wake Up Enable): used to enable the wake-up function of low nibble in
PORT9.(1/0=enable/disable)
* Bit5 (/WUP9H, PORT9 high nibble Wake Up Enable): used to enable the wake-up function of high nibble in
PORT9.(1/0=enable/disable)
* Bit6 (/WDTE,Watch Dog Timer Enable)
Control bit used to enable Watchdog timer.(1/0=enable/disable)
The relation between Bit3 to Bit6 can see the diagram 9.
* Bit7(Power control of Call Waiting circuit)
(1/0=enable circuit /disable circuit)
When Call waiting circuit is powered on, PLL is also enabled regardless of RA bit6(/358E). When Call
waiting circuit is powered off, PLL status is depended on RA bit6(/358E) setting.
/WURING
/RINGTIME
/WUP9L
PORT9(3:0)
/WUP9H
PORT9(7:4)
/WDTE
/WDTEN 0/1=enable/disable
Fig.9 Wake up function and control signal
12. RF (Interrupt Status Register)
7
6
5
4 3 2 1 0
INT3 FSK/CW
C8_2
C8_1
INT2 INT1 INT0
TCIF
* "1" means interrupt request, "0" means non-interrupt
* Bit 0 (TCIF) TCC timer overflow interrupt flag. Set when TCC timer overflows .
* Bit 1 (INT0) external INT0 pin interrupt flag .
* Bit 2 (INT1) external INT1 pin interrupt flag .
* Bit 3 (INT2) external INT2pin interrupt flag .
* Bit 4 (C8_1) internal 8 bit counter interrupt flag .
* Bit 5 (C8_2) internal 8 bit counter interrupt flag .
* Bit 6 ( FSK/CW ) FSK data or Call waiting data interrupt flag
* Bit 7 (INT3) external INT3 pin interrupt flag.
* High to low edge trigger , Refer to the Interrupt subsection.
* IOCF is the interrupt mask register. User can read and clear.
13. R10~R3F (General Purpose Register)
* R10~R3F (Banks 0~3) all are general purpose registers.
VII.2 Special Purpose Registers
1. A (Accumulator)
* Internal data transfer, or instruction operand holding
* It's not an addressable register.