HT46R24(2004) Ver la hoja de datos (PDF) - Holtek Semiconductor
Número de pieza
componentes Descripción
Fabricante
HT46R24 Datasheet PDF : 49 Pages
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Pad Assignment
HT46C24
HT46R24/HT46C24
P B 3 /A N 3
P B 2 /A N 2
P B 1 /A N 1
P B 0 /A N 0
PF3
PF2
PF1
PD7
PD6
PD5
PD4
GND
GND
54 53 52 51 50 49 48 47 46 45 44 43 42
41
40
39
38
1
2
3
4
(0 ,0 )
5
6
7
8
9
10
11
12
13 14 15 16 17 18 19 20 21 22 23 24 25 26
37
36
35
34
33
32
31
30
27 28 29
PF5
PF6
PF7
O SC2
O SC1
VCC
VCC
VCC
RES
TM R 1
P D 3 /P W M 3
P D 2 /P W M 2
* The IC substrate should be connected to VSS in the PCB layout artwork.
Pin Description
Pin Name
PA0~PA2
PA3/PFD
PA4
PA5/INT
PA6/SDA
PA7/SCL
PB0/AN0
PB1/AN1
PB2/AN2
PB3/AN3
PB4/AN4
PB5/AN5
PB6/AN6
PB7/AN7
I/O Options
Description
I/O
Pull-high
Wake-up
PA3 or PFD
I/O or Serial
Bus
Bidirectional 8-bit input/output port. Each bit can be configured as wake-up
input by option (bit option). Software instructions determine the CMOS out-
put or Schmitt trigger input with or without pull-high resistor (determined by
pull-high options: bit option). The PFD and INT are pin-shared with PA3
and PA5, respectively. Once the I2C Bus function is used, the internal reg-
isters related to PA6 and PA7 cannot be used.
Bidirectional 8-bits input/output port. Software instructions determine the
CMOS output, Schmitt trigger input with or without pull-high resistor (deter-
I/O Pull-high mined by pull-high option: bit option) or A/D input. Once a PB line is se-
lected as an A/D input (by using software control), the I/O function and
pull-high resistor are automatically disabled.
Rev. 1.50
3
May 3, 2004
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