EM78815AQ 查看數據表（PDF） - ELAN Microelectronics
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EM78815AQ Datasheet PDF : 82 Pages
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EM78815
8-Bit Microcontroller
6 Pin Descriptions
6.1 Power Pin
Pin
VDD
AVDD
GND
AVSS
I/O
Power
Power
Power
Power
Digital Power
Analog Power
Digital Ground
Analog Ground
Description
6.2 Clock Pin
Pin
XIN
XOUT
PLLC
I/O
Description
I
Input pin for 32.768 kHz oscillator
O
Output pin for 32.768 kHz oscillator
I
Phase lock loop capacitor, connect a 0.01µ capacitor to
0.047µ with GND.
6.3 External LCD Device Control Pin
Pin
I/O
Description
LCDD0~LCDD7
I/O
External LCD driver data bus. This is pin-shared with Port
B0~Port B7.
/WR
O
Write enable output (active low signal). This is pin-shared
with Port C2.
/RD
O
Read enable output (active low signal). This is pin-shared
with Port C3.
Used as register selection. When A0 is equal to 1, the data
A0
O
bus transmits LCD Data. When A0 is equal to 0, the data
bus transmits LCD Address. This is pin-shared with Port C4.
/CS1 ~ /CS2
O
Chip Select signal output. This is pin-shared with Port C1~
Port C0
6.4 FSK, CW
Pin
TIP
RING
CWGS
CWIN
I/O
Description
I
Should be connected to the TIP side of the twisted pair lines
for FSK.
I
Should be connected to the RING side of the twisted pair
lines for FSK.
O
Gain adjustment of single-ended input OP Amp.
I
Single-ended input OP Amp for call waiting decoder.
Product Specification (V2.4) 08.01.2004
7
(This specification is subject to change without further notice)
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