em78p809n ELAN Microelectronics Corp, em78p809n Datasheet - Page 12

• Manufacturer Part Number: em78p809n
• Description: 8-bit Microcontroller
• Manufacturer: ELAN Microelectronics Corp

EM78P809N
8-Bit Microcontroller
8 •
000 : PAGE0 0000~03FF
001 : PAGE1 0400~07FF
010 : PAGE2 0800~0BFF
011 : PAGE3 0C00~0FFF
100 : PAGE4 1000~13FF
101 : PAGE5 1400~17FF
110 : PAGE6 1800~1BFF
111 : PAGE7 1C00~1FFF
PC
A12
RBS1
Bit 7
R3/SR − Status Register ( Address: 03h )
Bit 4 (T) : Time-out bit. Set to “1” with the "SLEP" and "WDTC" commands, or
Bit 7 ~ Bit 6 (RBS1 ~ RBS0) : R-Register page select
Bit 5 : Not used
R5
RBS1
A11
0
0
1
1
RBS0
Bit 6
A10
during power up, and reset to “0” with the WDT time-out.
Fig. 4. Program Counter Organization
CALL
RET
RETL
RETI
STACK LEVEL 1
STACK LEVEL 2
STACK LEVEL 3
STACK LEVEL 4
STACK LEVEL 5
STACK LEVEL 6
STACK LEVEL 7
STACK LEVEL 8
A9
Bit 5
A8
0
Store ACC, R3, R5
RBS0
A7
0
1
0
1
~
Bit 4
(This specification is subject to change without further notice)
T
A0
Reset Vector
WDT Timer Overflow
External INT0 Pin Interrupt Occurs
TCC Overflow
External INT1 pin Interrupt Occurs
Time Base Timer Interrupt
UART Transmit Data Buffer Empty
UART Receive Data Buffer Full
UART Receive Error
TC3 Interrupt
SPI Interrupt
TC4 Interrupt
External INT3 Pin Interrupt Occurs
AD Conversion Complete
External INT5 Pin Interrupt Occurs
On-chip Program Memory
Bit 3
Register Bank (Address 05H ~ 0FH)
P
Product Specification (V1.0) 07.26.2005
Bit 2
Z
Bank 0
Bank 1
Bank 2
Bank 3
Bit 1
DC
0000h
0003h
0006h
0009h
000Fh
0012h
0015h
0018h
001Bh
0021h
0024h
0027h
0030h
0033h
0036h
1FFFh
Bit 0
C