EM78P915
8-bit Micro-controller
V. Functional Block Diagram
120 byte
LCD RAM
Pull high
control
LCD driver
COM0~COM15
SEG0~SEG7
SEG8~SEG27
SEG48~SEG55/PB0~PB7
SEG56~SEG63/PC0~PC7
SEG64~SEG71/P80~P87
SEG72~SEG79/P90~P97
DAOUT1
DAOUT2
Current
DA1
GPIO control
Vin
32K x 13
Program ROM
Comparator
MCU
2.5K x 8
Data RAM
32.768K Hz
XIN
XOUT
Sub OSC
MCLK
PLL
P70~P73/INT0
PORT7
P77/INT2
SDT
detector
TIP
RING
FSK
decoder
Timer 0
Timer 1
EST
STGT
DTMF
receiver
TCC
WDT
Interrupt
Control
CW
GAIN
CWTIP
SPI
(Serial port)
P60/SCK
P62/SDI
P61/SDO
Figure 3, Block diagram1
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* This specification is subject to be changed without notice.
2005/12/21 (V2.0)
EMC [ ELAN MICROELECTRONICS CORP ]
