HT49R30A-1/HT49C30-1/HT49C30L
HT49C30L
P . D /P A 3
4 7
B Z /P A 1
B Z /P A 0
O S C 1
O S C 2
O S C 3
O S C 4
V D D
R E S
P A 5
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
V 1
1 3
V 2
P A 4
4 8
P A 2
4 6
4 5
4 4
4 3
4 2
4 1
4 0
3 9
3 8
P A 6
P A 7
IN T 0 /P B 0
IN T 1 /P B 1
T M R /P B 2
P B 3
P B 4
P B 5
V S S
V L C D
3 7
3 6
(0 ,0 )
3 5
3 4
3 3
3 2
3 1
3 0
2 9
2 8
2 7
2 6
1 4
C 1
1 5
C 2
1 6
C O M 0
1 7
C O M 1
1 8
C O M 2
1 9
C O M 3 /S E G 1 8
2 0
S E G 1 7
2 1
S E G 1 6
2 2
S E G 1 5
2 3
S E G 1 4
2 4
S E G 1 3
2 5
S E G 1 2
S E G 0
S E G 1
S E G 2
S E G 3
S E G 4
S E G 5
S E G 6
S E G 7
S E G 8
S E G 9
S E G 1 0
S E G 1 1
* The IC substrate should be connected to VSS in the PCB layout artwork.
Pad Description
Pad Name
PA0/BZ
PA1/BZ
PA2
PA3/PFD
PA4~PA7
I/O
Options
Wake-up
Pull-high
or None
CMOS or
NMOS
Description
PA0~PA7 constitute an 8-bit bidirectional input/output port with Schmitt trig-
ger input capability. Each bit on port can be configured as a wake-up input by
options. PA0~PA3 can be configured as a CMOS output or NMOS input/out-
put with or without pull-high resistor by options. PA4~PA7 are always
pull-high NMOS input/output. Of the eight bits, PA0~PA1 can be set as I/O
pins or buzzer outputs by options. PA3 can be set as an I/O pin or as a PFD
output also by options.
PB0~PB5 constitute a 6-bit Schmitt trigger input port. Each bit on port are
with pull-high resistor. Of the six bits, PB0 and PB1 can be set as input pins or
as external interrupt control pins (INT0) and (INT1) respectively, by software
application. PB2 can be set as an input pin or as a timer/event counter input
pin TMR also by software application.
Negative power supply, ground
LCD power supply for HT49R30A-1/HT49C30-1.
Voltage pump for HT49C30L.
Voltage pump for HT49R30A-1/HT49C30-1.
LCD power supply for HT49C30L.
Voltage pump
I/O
PB0/INT0
PB1/INT1
PB2/TMR
PB3~PB5
VSS
VLCD
V2
V1,C1,C2
SEG18/COM3
COM2~COM0
SEG17~SEG0
I
¾
¾
I
I
I
O
O
¾
¾
¾
¾
1/2 or 1/3 or 1/4 SEG18 can be set as a segment or as a common output driver for LCD panel
Duty
by options. COM2~COM0 are outputs for LCD panel plate.
¾
LCD driver outputs for LCD panel segments
Rev. 1.10
4
September 25, 2002
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
