HT48C50-1 Просмотр технического описания (PDF) - Holtek Semiconductor
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HT48C50-1 Datasheet PDF : 41 Pages
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HT48R50A-1/HT48C50-1
Pin Assignment
PB5 1
PB4 2
PA3 3
PA2 4
PA1 5
PA0 6
PB3 7
PB2 8
P B 1 /B Z 9
P B 0 /B Z 1 0
V S S 11
P G 0 /IN T 1 2
P C 0 /T M R 0 1 3
P C 1 14
28 P B 6
27 P B 7
26 P A 4
25 P A 5
24 P A 6
23 P A 7
2 2 O S C 2 /P G 2
2 1 O S C 1 /P G 1
20 V D D
19 R E S
1 8 P C 5 /T M R 1
17 P C 4
16 P C 3
15 P C 2
H T 4 8 R 5 0 A -1 /H T 4 8 C 5 0 -1 -A
2 8 S K D IP -A /S O P -A
PB5 1
PB4 2
PA3 3
PA2 4
PA1 5
PA0 6
PB3 7
PB2 8
P B 1 /B Z 9
P B 0 /B Z 1 0
N C 11
N C 12
N C 13
N C 14
P D 7 15
P D 6 16
P D 5 17
P D 4 18
V S S 19
P G 0 /IN T 2 0
TM R 0 21
P C 0 22
P C 1 23
P C 2 24
48 P B 6
47 P B 7
46 P A 4
45 P A 5
44 P A 6
43 P A 7
42 N C
41 N C
40 N C
39 N C
3 8 O S C 2 /P G 2
3 7 O S C 1 /P G 1
36 V D D
35 R E S
34 TM R 1
33 P D 3
32 P D 2
31 P D 1
30 P D 0
29 P C 7
28 P C 6
27 P C 5
26 P C 4
25 P C 3
H T 4 8 R 5 0 A -1 /H T 4 8 C 5 0 -1 -A
4 8 S S O P -A
Pin Description
Pin Name I/O
Options
Description
PA0~PA7
Pull-high* Bidirectional 8-bit input/output port. Each bit can be configured as a
I/O
Wake-up
wake-up input by options. Software instructions determine the CMOS out-
CMOS/Schmitt put or Schmitt trigger or CMOS input with pull-high resistor (determined by
trigger Input pull-high option).
PB0/BZ
PB1/BZ
PB2~PB7
Bidirectional 8-bit input/output port. Software instructions determine the
CMOS output or Schmitt trigger input with pull-high resistor (determined by
I/O
Pull-high* pull-high option).
I/O or BZ/BZ The PB0 and PB1 are pin-shared with the BZ and BZ, respectively. Once
the PB0 and PB1 are selected as buzzer driving outputs, the output signals
come from an internal PFD generator (shared with Timer/Event Counter 0).
PD0~PD7 I/O
Pull-high*
Bidirectional I/O lines. Software instructions determine the CMOS output
or Schmitt trigger input with pull-high resistor (determined by pull-high op-
tion).
VSS
¾
¾
Negative power supply, ground
Bidirectional I/O lines. Software instructions determine the CMOS output
PG0/INT
I/O
Pull-high*
or Schmitt trigger input with pull-high resistor (determined by pull-high op-
tion). This external interrupt input is pin-shared with PG0. The external in-
terrupt input is activated on a high to low transition.
TMR0
I
¾
Timer/Event Counter 0 Schmitt trigger input (without pull-high resistor)
PC0~PC7 I/O
Pull-high*
Bidirectional I/O lines. Software instructions determine the CMOS output
or Schmitt trigger input with pull-high resistor (determined by pull-high op-
tion).
TMR1
I
¾
Timer/Event Counter 1 Schmitt trigger input (without pull-high resistor)
Rev. 2.00
3
March 8, 2006
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