EM78869 Ver la hoja de datos (PDF) - ELAN Microelectronics
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EM78869 Datasheet PDF : 38 Pages
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EM78869
8-Bit RISC Type Microprocessor
ADDRESS
REGISTER
00 R0
01 R1(TCC)
02 R2(PC)
03 R3(STATUS)
04 R4(RSR)
05
R5(ROM PAGE & PORT5)
06 R6(PORT 6)
07 R7(PORT 7)
08 R8(PORT 8)
09 R9(PORT 9)
0A RA (PLL)
0B
RB (RESERVED)
0C RC (640 RAM ADDRESS)
0D RD (640 RAM DATA)
0E RE (WDT)
0F RF (INT FLAG)
10
:
16x8 COMMON
1F
REGISTER
20
:
BANK 0~BANK 3
32x8 REGISTER
3F
CONTROL REGISTER
(PAGE 0)
R3(BIT 6)
PAGE 0
IOC5
IOC6
IOC7
IOC8
IOC9
IOCA
IOCB(LCD ADDRESS)
IOCC(LCD DATA)
IOCD(PULL HIGH)
IOCE(IO,LCD)
IOCF(INT CONTROL)
CONTROL REGISTER
(PAGE 1)
PAGE 1
IOCB(COUNTER1)
IOCC(COUNTER2)
IOCE ( PSC, P7 OPEN DRAIN)
640 bytes data RAM
00
00
00
:
:
LCD RAM
:
:
BANK 0~BANK 2
:
7F
:
256x8 REGISTER
7F BANK 2 only (128 bytes)
FF
Fig. 4 Data Memory Configuration
6.1.4 R3 (Status Register)
Bit 7
–
Bit 6
PAGE
Bit 5
0
Bit 4
T
Bit 3
P
Bit 2
Z
Bit 1
DC
Bit 0
C
Bit 0: (C) Carry flag
Bit 1: (DC) Auxiliary carry flag
Bit 2: (Z) Zero flag
Bit 3: (P) Power down bit. Set to 1 during power on or by a "WDTC" command and reset to
0 by a "SLEP" command.
Bit 4: (T) Time-out bit. Set to 1 by the "SLEP" and "WDTC" command or during power up;
and reset to 0 by WDT timeout.
Event
T
WDT wake-up from sleep mode
0
WDT time out (not sleep mode)
0
/RESET wake up from sleep
1
Power up
1
Low pulse on /RESET pin
X
P
Remark
0
1
0
1
X
X =Don't care
6 of 34 07.12.2004 (V1.0)
This specification is subject to change without further notice.
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