HT49C30-1 데이터 시트보기 (PDF) - Holtek Semiconductor
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HT49C30-1 Datasheet PDF : 43 Pages
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HT49C30L
HT49R30A-1/HT49C30-1/HT49C30L
1 48 47 46 45 44 43 42 41 40 39 38
PA6
PA7
IN T 0 /P B 0
IN T 1 /P B 1
T M R /P B 2
PB3
PB4
PB5
VSS
V LC D
2
3
4
5
6
7
8
9
10
11
12 13 14 15
37
36
35
(0 ,0 )
34
33
32
31
30
29
28
27
26
16 17 18 19 20 21 22 23 24 25
SEG 0
SEG 1
SEG 2
SEG 3
SEG 4
SEG 5
SEG 6
SEG 7
SEG 8
SEG 9
S E G 10
S E G 11
* The IC substrate should be connected to VSS in the PCB layout artwork.
Pad Description
Pad Name I/O Options
Description
PA0/BZ
PA1/BZ
PA2
PA3/PFD
PA4~PA7
PA0~PA7 constitute an 8-bit bidirectional input/output port with Schmitt trig-
Wake-up ger input capability. Each bit on port can be configured as a wake-up input by
Pull-high options. PA0~PA3 can be configured as a CMOS output or NMOS input/out-
I/O or None put with or without pull-high resistor by options. PA4~PA7 are always
CMOS or pull-high NMOS input/output. Of the eight bits, PA0~PA1 can be set as I/O
NMOS pins or buzzer outputs by options. PA3 can be set as an I/O pin or as a PFD
output also by options.
PB0/INT0
PB1/INT1
PB2/TMR
PB3~PB5
I
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
¾
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.
VSS
¾
¾
Negative power supply, ground
VLCD
I
¾
LCD power supply for HT49R30A-1/HT49C30-1.
Voltage pump for HT49C30L.
V2
I
¾
Voltage pump for HT49R30A-1/HT49C30-1.
LCD power supply for HT49C30L.
V1,C1,C2
I
¾
Voltage pump
SEG18/COM3
COM2~COM0
O
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.
SEG17~SEG0 O
¾
LCD driver outputs for LCD panel segments
Rev. 1.10
4
September 25, 2002
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