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KING BILLION ELECTRONICS CO., LTD

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HE83149

HE80000 SERIES

V1.0E

C. Pin Description

Pin #

Pin name

I/O

Function

Description

FXI,

FXO

External fast clock

input/output pins are used

to connect crystal or RC to

generate the 32.768KHz ~

8MHz system clock.

SXI,

SXO

External slow clock

input/output pins used to

connect the 32.768KHz

crystal to generate slow

clock for system operation

(slow mode), LCD display

or timer 1 clock source.

Mask Option setting:

MO_FCK/SCKN= 00 : Slow Clock only

01 : Illegal

10：Dual Clock

11：Fast Clock only

MO_FOSCE= 0：Internal fast clock

1：External fast clock

MO_FXTAL= 0：R,C OSC. for Fast Clock

1：Crystal OSC. for Fast Clock

MO_SXTAL= 0：R,C OSC. for 32.768K Clock

1：Crystal OSC. for 32.768K Clock.

Use OP1 and OP2 to switch among different operation

mode (NORMAL, SLOW, IDEL and SLEEP). In Dual

Clock mode, the main system clock is still the Fast

Clock. The 32768 Hz clock is for LCD and Timer 1 only.

RSTP_N

System reset signal

Active low and level trigger reset signal. User can also

set the mask option MO_PORE=1 to enable the build-in

Power-on reset circuit besides using the reset pin.

Watch Dog Timer can also be enabled/disabled by the

mask option,

MO_WDTE = 0：Disable Watch Dog Timer

= 1：Enable Watch Dog Timer

TSTP_P

IC Test Pin

Please bond this pin to ground by a 0 ohm resistor

to let it accessible when it’s necessary for some

testing.

97..

104

PRTD[7:0]

Bi-directional I/O port D.

PRTD [7:2] also used as

wake-up pin, and PRTD

[7:6] also used as external

interrupt pin.

Mask options setting:

MO_DPP [7:0] = 1：Push-pull output.

= 0：Open-drain output.

Output must be “1” before reading whenever uses them

as input (Non tri-state structure).

5..

PRT15[7:0]/

SEG[63:56]

B/O

8-pin bi-directional I/O port

that is shared with LCD

segment pin.

The pin functions are determined by the mask option

MO_LIO15[7:0]

MO_LIO15 [7:0] = 1：LCD Pin.

= 0：I/O Pin.

When they are selected as I/O pins, the output driving

type can be set by mask option.

MO_15PP [7:0] = 1：Push-pull.

= 0：Open-drain.

Output must be “1” before reading whenever uses them

as input (Non tri-state structure).

13...

PRT14[7:0]/

SEG[55:48] B/O 8-pin bi-directional I/O port

that is shared with LCD

The pin functions are determined by the mask option

MO_LIO14[7:0]

MO_LIO14 [7:0] = 1：LCD Pin.

= 0：I/O Pin.

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