em78p811 ELAN Microelectronics Corp, em78p811 Datasheet - Page 6

• Manufacturer Part Number: em78p811
• Description: 8-bit Micro-controller
• Manufacturer: ELAN Microelectronics Corp

VI.Pin Descriptions
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* This specification is subject to be changed without notice.
PIN
VDD1,VDD2
AVDD
VSS1,VSS2
AVSS
Xtin
Xtout
COM0..COM7
COM8..COM15
SEG0...SEG43
SEG44..SEG51
SEG52..SEG59
PLLC
TIP
RING
RDET1
/RING TIME
INT0
INT1
INT2
INT3
P7.0 ~P7.7
P6.0 ~P6.7
P8.0 ~P8.7
P9.0 ~P9.7
TEST
DTMF
RESET
OTP pin
DATAIN(P73)
OEB(P74)
PGMB(P75)
ACLK(P76)
DINCK(P77)
I/O
POWER
POWER
I
O
O
O (PORT6)
O
O (PORT8)
O (PORT9)
I
I
I
I
I
PORT7(0)
PORT7(1)
PORT7(2)
PORT7(3)
PORT7(4:7)
PORT7
PORT6
PORT8
PORT9
I
O
I
I/O
I
I
I
I
DESCRIPTION
digital power
analog power
analog ground
Input pin for 32.768 kHz oscillator
Common driver pins of LCD drivers
Segment driver pins of LCD drivers
PORT9 AS FUNCTION KEY CAN WAKE UP WATCHDOG.
Phase loop lock capacitor, connect a capacitor 0.01u to 0.047u with
AVSS
Should be connected with TIP side of twisted pair lines
the twisted pair lines through an attenuating network.
connected to the pin.
PORT7(0)~PORT7(3) signal can be interrupt signals.
IO port
PORT 7 can be INPUT or OUTPUT port each bit.
Internal Pull high function.
Key scan function.
Bit6,7 open drain function
PORT 6 can be INPUT or OUTPUT port each bit.
And shared with Common signal.
PORT 8 can be INPUT or OUTPUT port each bit.
And shared with Segment signal.
PORT 9 can be INPUT or OUTPUT port each bit.
And can be set to wake up watch dog timer.
And shared with Segment signal.
DTMF tone output
Data pin
needs two clocks.
digital ground
Output pin for 32.768 kHz oscillator
Should be connected with TIP side of twisted pair lines
Detect the energy on the twisted pair lines . These two pins coupled to
Determine if the incoming ring is valid.An RC network may be
Test pin into test mode , normal low
Output enable. Active low
Program write enable. Active low
CLK for OTP memory address increment . Increasing a address
Data latch clock. Latch a bit at rising edge
5
8-bit OTP Micro-controller
EM78P811