W925E625 Datasheet, PDF (6/75 Pages) Winbond – 8-bit CID MICROCONTROLLER

W925E/C625
Pin Description, continued
SYMBOL I/O
DESCRIPTION
XIN2
Input pin for sub-oscillator. Connected to 32.768KHz crystal only. Suggest to
I add an external capacitor about 10~30Pf to ground (V_SS) for the accuracy of
the oscillator.
DTMF/FSK
FTE=0, Dual-Tone Multi-Frequency(DTMF) signal output
O
FTE=1, FSK signal output
BUZ
O Buzzer output pin. If buzzer function is disabled, BUZ pin is in floating state.
P00-P07
Input/Output port0. Port0 data can be bit controlled. The I/O mode is
I/O controlled by P0IO register. Port0 is open drain type when it is configured as
output mode.
P10-P17
Input/Output port1 with pull high resistors. Port1 data can be bit controlled.
I/O The I/O mode is controlled by P1IO register. The P10-P13 and P14-P17
indicates the external interrupt pins(INT2 and INT3)
P20-P27
I/O
Input/Output port2 with pull high resistors. Port2 data can be bit controlled.
The I/O mode is controlled by P2IO register.
P30-P37
Input/Output port3 with pull high resistors. Port3 data can be bit controlled.
I/O The I/O mode is controlled by P3IO register. The special function of port3 is
referred to the description of P3 register.
P40-P47
Contents are byte controlled. Pull high and I/O mode can be bit controlled.
I/O
The special function of P4 is referred to the description of P4 register.
VPOS,
VNEG
I The comparator V+, V- analog input pins. Share pin with P4.2 and P4.4
DH1,DH2
I Connection terminals for LCD voltage doublers capacitor.
VLCD1-5
I Positive LCD voltage supplies terminals.
SEG0-
SEG55
O LCD segment output pins.
COM0-
COM31
O LCD common output pins.
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