HE84760 Datasheet, PDF (6/31 Pages) King blillion Electronics Co.,Ltd. – 8-bit Micro-controller

King Billion Electronics Co., Ltd
駿億電子股份有限公司
HE84760
HE80000 SERIES
Pin Name Pin # I/O
Description
TSTP_P
80
I
Test input pin. Please bond this pad and reserve a test point on PCB for debugging.
But for improving ESD, please connect this point with zero Ohm resistor to GND.
External slow clock pins. Slow clock is clock source for LCD display, TIMER1,
SXO,
81, O, Time-Base and other internal blocks. Both crystal and RC oscillator are provided.
SXI
82 I The slow clock type can be selected by mask option MO_SXTAL. Choose ‘0’ for RC
type and ‘1’ for crystal oscillator.
VDD
83
P
Positive power Input. 0.1 µF decoupling capacitors should be placed as close to IC
VDD and GND pads as possible for best decoupling effect.
TGND2
85 P Power Ground Input. The TGND2 should connect with GND pin.
TGND1
88 P Power Ground Input. The TGND1 should connect with GND pin.
4-bit bi-directional I/O port 10. The output type of I/O pad can also be selected by
mask option MO_10PP[3..0] (‘1’ for push-pull and ‘0’ for open-drain).
PRT10[3:0]
90~93
B
As the output structure of I/O pad does not contain tri-state buffer. When using the
I/O pad as input pad, “1” must be outputted before reading.
PRT10[0] is shared with DTMFO of DTMF generator. PRT10[1] is multiplexed with
KEYTONE output.
8-bit bi-directional I/O port D. The output type of I/O pad can also be selected by
mask option MO_DPP[7..0] (‘1’ for push-pull and ‘0’ for open-drain).
PRTD[7..0]
94~101
B
As the output structure of I/O pad does not contain tri-state buffer. When using the
I/O as input, ‘1’ must be outputted before reading the pin.
PRTD[7..2] can be used as wake-up pins. PRTD[7..6] can be as external interrupt
sources.
GND_PWM 102 O Dedicated Ground for PWM output.
PWM
103
O
The PWM output can drive speaker or buzzer directly. Set the bit2 of VOC register as
one to turn on PWM. Using VDD & PWM to drive output device.
8-bit bi-directional I/O port C. The output type of I/O pad can also be selected by
mask option MO_CPP[7..0] (‘1’ for push-pull and ‘0’ for open-drain).
PRTC[7:4]
104~107
B
As the output structure of I/O pad does not contain tri-state buffer. When using the
I/O as input, ‘1’ must be outputted before reading the pin.
PRTC[7:4] is shared with Key Scan Dedicated Input SCNI[3:0]. The Key Scan
function can be disabled by clearing MO_LCDKEY mask option to ‘0’.
VDD_RAM 108 P Dedicated power input for RAM
COM[32..63] pads are shared with SEG[95..64] outputs. The functions of the pads to
CMSG[32..63] 109~140 O be COM drivers or SEG drivers can be selected by mask option MO_COM[1..0].
Please refer to LCD driver configuration for details.
SEG[63..44] 141~160 O LCD segment SEG[63..44] outputs.
LCD segments share pads with key scan out SCNO[19..0]. The key scan function of
SGKY[43..24] 161~180
O
these pins can be disabled by mask option clearing MO_LCDKEY to ‘0’, then
SGKY[43..24] function as LCD segment driver only. Setting MO_LCDKEY to ‘1’
will turn on the key scan function.
I: Input, O: Output, B: Bidirectional, P: Power.
August 15, 2003
Page 6 of 31
V1.2
This specification is subject to change without notice. Please contact sales person for the latest version before use.