EM78811
8-BIT MICRO-CONTROLLER FOR TELECOM PRODUCT
Xin Xout
TCC
WDTTimer
Prescaler
R2
Oscillator/Timing
Control
Stack
ROM
WDT Timeout
R1(TCC)
Instruction
register
Interrupt
Controller
ALU
ACC
RAM
Control
sleep and
wake-up
Instruction
Decoder
on I/O ports
R3
R4
DATA & CONTROLL BUS
I/O
PORT
IOC7
R7
CALLER ID
RAM
P70˜P77
LCD RAM
TIP
COM0˜COM7
SEG0˜SEG35
Ring det
Carrier det
Data
FSK
Decoder
LCD Driver
RING
RING DET1
RING TIME
RA
RB
/FSKPWR
low battery
detect
Row
Column
DTMF output
DTMF
IOC8
R8
I/O
PORT
8
P80˜P87
SEG44˜SEG51
IOC9
R9
I/O
PORT
9
I/O
PORT
6
IOC6
R6
P60˜P67
COM8˜COM15
P90˜P97
SEG52˜SEG59
* This specification are subject to be changed without notice.
3
10.12.1998
ELAN [ ELAN MICROELECTRONICS CORP ]
