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AT89C5130A-RDTIM Datasheet(PDF) 9 Page - ATMEL Corporation

Part # AT89C5130A-RDTIM
Description  8-bit Flash Microcontroller with Full Speed USB Device
PDF  184 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89C5130A-RDTIM Datasheet(HTML) 9 Page - ATMEL Corporation

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9
AT89C5130A/31A-M
4337C–USB–02/05
Table 8. Ports Signal Description
Table 9. Clock Signal Description
Table 10. USB Signal Description
Signal
Name
Type
Description
Alternate Function
P0[7:0]
I/O
Port 0
P0 is an 8-bit open-drain bidirectional I/O port. Port 0
pins that have 1s written to them float and can be used
as high impedance inputs. To avoid any parasitic current
consumption, Floating P0 inputs must be pulled to VDD or
V
SS.
AD[7:0]
P1[7:0]
I/O
Port 1
P1 is an 8-bit bidirectional I/O port with internal pull-ups.
KIN[7:0]
T2
T2EX
ECI
CEX[4:0]
P2[7:0]
I/O
Port 2
P2 is an 8-bit bidirectional I/O port with internal pull-ups.
A[15:8]
P3[7:0]
I/O
Port 3
P3 is an 8-bit bidirectional I/O port with internal pull-ups.
LED[3:0]
RxD
TxD
INT0
INT1
T0
T1
WR
RD
P4[1:0]
I/O
Port 4
P4 is an 2-bit open drain port.
SCL
SDA
Signal
Name
Type
Description
Alternate
Function
XTAL1
I
Input to the on-chip inverting oscillator amplifier
To use the internal oscillator, a crystal/resonator circuit is connected to this
pin. If an external oscillator is used, its output is connected to this pin.
-
XTAL2
O
Output of the on-chip inverting oscillator amplifier
To use the internal oscillator, a crystal/resonator circuit is connected to this
pin. If an external oscillator is used, leave XTAL2 unconnected.
-
PLLF
I
PLL Low Pass Filter input
Receive the RC network of the PLL low pass filter.
-
Signal
Name
Type
Description
Alternate
Function
D+
I/O
USB Data + signal
-
D-
I/O
USB Data - signal
-
VREF
O
USB Reference Voltage
Connect this pin to D+ using a 1.5 k
Ω resistor to use the Detach function.
-



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