A8351601 View Datasheet(PDF) - AMIC Technology
Part Name
Description
Manufacturer
A8351601 Datasheet PDF : 44 Pages
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A8351601 Series
Pin Description (continued)
Symbol
P3.0-P3.7
PSEN
RST
PWM1
PWM2
PWM3
PWM4
XTAL1
XTAL2
GND
VCC
P-DIP
10-17
10
11
12
13
14
15
16
17
29
9
19
18
20
40
Pin No.
PLCC
11,13-19
11
13
14
15
16
17
18
19
32
10
1
12
23
34
21
20
22
44
QFP
5, 7-13
5
7
8
9
10
11
12
13
26
4
39
6
17
28
15
14
16
38
I/O
Description
I/O Port 3: Port 3 is an 8-bit bidirectional I/O port with internal
pullups. Port 3 pins that have 1s written to them are pulled
high by the internal pullups and can be used as inputs. As
inputs, Port 3 pins that are externally pulled low will source
current because of the internal pullups. (See DC
Characteristics: IIL).
Port 3 also serves the special features of the A8351601, as
listed below:
I RxD (P3.0): Serial input port.
O TxD (P3.1): Serial output port.
I INT0 (P3.2): External interrupt 0.
I INT1 (P3.3): External interrupt 1.
I T0 (P3.4): Timer 0 external input.
I T1 (P3.5): Timer 1 external input.
O WR (P3.6): External data memory write strobe.
O RD (P3.7): External data memory read strobe.
O Program Store Enable: The read strobe to external
program memory. When the device is executing code from
the external program memory, PSEN is activated twice
each machine cycle except that two PSEN actives are
skipped during each access to external data memory.
PSEN is not activated during fetches from internal program
memory.
I Reset: A high on this pin for two machine cycles while the
oscillator is running, resets the device.
O Pulse width modulation 1 output.
O Pulse width modulation 2 output.
O (D2, D1, D0) controlled the delay time of PWM3 from 4 CLK
to 11 CLK after PWM1 change.
O PWM1.7: 1 is PWM3/4096, 75% duty (3072 PWM3 cycle
high, 1024 PWM3 cycle low)
PWM1.7: 0 is PWM3/1024, 67% duty (2048 PWM3 cycle
high, 1024 PWM3 cycle low)
I Crystal 1: Input to the inverting oscillator and input to the
internal clock generator circuits.
O Crystal 2: Output from the inverting oscillator.
I Ground: 0V reference.
I Power Supply: This is the power supply voltage for
operation.
(July, 2002, Version 1.0)
5
AMIC Technology, Inc.
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