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PDF HT1632C Data sheet ( Hoja de datos )
| Número de pieza | HT1632C | |
| Descripción | 32 x 8 & 24 x 16 LED Driver | |
| Fabricantes | Holtek | |
| Logotipo |  |
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HT1632C
32´8 & 24´16 LED Driver
Features
· Operating voltage: 2.4V~5.5V
· Multiple LED display - 32 ROW /8 COM and
24 ROW & 16 COM
· Integrated display RAM - select 32 ROW &
8 COM for 64´4 display RAM, or select
24 ROW & 16 COM for 96´4 display RAM
· 16-level PWM brightness control
· Integrated 256kHz RC oscillator
· Serial MCU interface - CS, RD, WR, DATA
· Data mode & command mode instruction
· Cascading function for extended applications
· Selectable NMOS open drain output driver and
PMOS open drain output driver for commons
· 52-pin QFP package
Applications
· Industrial control indicator
· Digital clock, thermometer, counter, voltmeter
· Instrumentation readouts
· Other consumer application
· LED Displays
General Description
The HT1632C is a memory mapping LED display control-
ler/driver, which can select a number of ROW and com-
mons. These are 32 ROW & 8 commons and 24 ROW &
16 commons. The device supports 16-gradation LEDs
for each out line using PWM control with software instruc-
tions. A serial interface is conveniently provided for the
command mode and data mode. Only three or four lines
are required for the interface between the host controller
and the HT1632C. The display can be extended by cas-
cading the HT1632C for wider applications.
Block Diagram
VDD
VSS
D is p la y R A M
CS
RD
WR
D ATA
O SC
SYNC
C o n tro l
and
T im in g
C ir c u it
T im in g
G e n e ra to r
L E D D r iv e r
2
LE D _V D D
COM 0
COM 7
ROW 0
R O W 23
R O W 2 4 /C O M 1 5
R O W 3 1 /C O M 8
LE D _V S S
2
P W M C o n tro l
Rev. 1.20
1 June 28, 2011
Free Datasheet http://www.datasheet4u.net/
1 page  
HT1632C
Functional Description
Display Memory - RAM
The static display memory (RAM) is organized into 64´4
bits or 96´4 bits and is used to store the display data. If
32 ROW & 8 COM is selected, the RAM size is 64´4
bits. If 24 ROW & 16 COM is selected, the RAM size is
96´4 bits. The contents of the RAM are directly mapped
to the contents of the LED driver. If the data in RAM is
set to ²1², the corresponding LED will be lighted. Data in
the RAM can be accessed by the READ, WRITE, and
READ-MODIFY-WRITE commands. The contents of
the RAM can be read or written from bit 0 of the specific
address. The following is a mapping from the RAM to
the LED pattern:
ROW0
ROW1
ROW2
ROW3
ROW4
ROW5
ROW6
ROW7
ROW8
ROW9
ROW10
ROW11
ROW12
ROW13
ROW14
ROW15
ROW16
ROW17
ROW18
ROW19
ROW20
ROW21
ROW22
ROW23
ROW24
ROW25
ROW26
ROW27
ROW28
ROW29
ROW30
ROW31
COM7
D3
COM6
D2
COM5
D1
COM4
COM3
01H
03H
05H
07H
09H
0BH
0DH
0FH
11H
13H
15H
17H
19H
1BH
1DH
1FH
21H
23H
25H
27H
29H
2BH
2DH
2FH
31H
33H
35H
37H
39H
3BH
3DH
3FH
Addr.
D0 D3
Data
COM2
D2
COM1
D1
COM0
00H
02H
04H
06H
08H
0AH
0CH
0EH
10H
12H
14H
16H
18H
1AH
1CH
1EH
20H
22H
24H
26H
28H
2AH
2CH
2EH
30H
32H
34H
36H
38H
3AH
3CH
3EH
Addr.
D0
Data
Rev. 1.20
32 ROW & 8 COM for 64´4 Display RAM
5
June 28, 2011
Free Datasheet http://www.datasheet4u.net/
5 Page 
WRITE Mode - Command Code = 1 0 1
CS
HT1632C
WR
D ATA
1 0 1 A6 A5 A4 A3 A2 A1 A0 D0 D1 D2 D3
M e m o ry A d d re s s 1 (M A 1 ) D a ta (M A 1 )
1 0 1 A6 A5 A4 A3 A2 A1 A0 D0 D1 D2 D3
M e m o ry A d d re s s 2 (M A 2 ) D a ta (M A 2 )
WRITE Mode - Successive Address Writing
CS
WR
D ATA
1 0 1 A6 A5 A4 A3 A2 A1 A0 D0 D1 D2 D3 D0 D1 D2 D3 D0 D1 D2 D3 D0 D1 D2 D3 D0
M e m o ry A d d re s s (M A ) D a ta (M A ) D a ta (M A + 1 ) D a ta (M A + 2 ) D a ta (M A + 3 )
READ-MODIFY-WRITE Mode - Command Code = 1 0 1
CS
WR
RD
D ATA
1 0 1 A6 A5 A4 A3 A2 A1 A0 D0 D1 D2 D3 D0 D1 D2 D3
M e m o ry A d d re s s 1 (M A 1 ) D a ta (M A 1 ) D a ta (M A 1 )
1 0 1 A6 A5 A4 A3 A2 A1 A0 D0 D1 D2 D3
M e m o ry A d d re s s 2 (M A 2 ) D a ta (M A 2 )
READ-MODIFY-WRITE Mode - Successive Address Accessing
CS
WR
RD
D ATA
1 0 1 A6 A5 A4 A3 A2 A1 A0 D0 D1 D2 D3 D0 D1 D2 D3 D0 D1 D2 D3 D0 D1 D2 D3 D0 D1 D2 D3 D0
M e m o ry A d d re s s (M A ) D a ta (M A ) D a ta (M A ) D a ta (M A + 1 ) D a ta (M A + 1 ) D a ta (M A + 2 )
Rev. 1.20
11
June 28, 2011
Free Datasheet http://www.datasheet4u.net/
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet HT1632C.PDF ] | |
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