at89c5131 ATMEL Corporation, at89c5131 Datasheet - Page 9
at89c5131
Manufacturer Part Number
at89c5131
Description
8-bit Flash Microcontroller With Full Speed Usb Device At89c5131
Manufacturer
ATMEL Corporation
Datasheet
1.AT89C5131.pdf
(176 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
at89c5131A-PUTUM
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
at89c5131A-RDTUM
Manufacturer:
ATMEL
Quantity:
5 000
Company:
Part Number:
at89c5131A-S3SUM
Manufacturer:
ATMEL
Quantity:
46
Company:
Part Number:
at89c5131A-UL
Manufacturer:
TI
Quantity:
12 500
Part Number:
at89c5131A-UL
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
at89c5131A-UM
Manufacturer:
TOSHIBA
Quantity:
1 200
Part Number:
at89c5131A-UM
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
4136C–USB–04/05
Table 8. Ports Signal Description
Table 9. Clock Signal Description
Table 10. USB Signal Description
Signal
Signal
Signal
Name
Name
XTAL1
XTAL2
P0[7:0]
P1[7:0]
P2[7:0]
P3[7:0]
P4[1:0]
Name
VREF
PLLF
D+
D-
Type
Type
Type
I/O
I/O
O
O
I/O
I/O
I/O
I/O
I/O
I
I
Description
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.
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.
PLL Low Pass Filter input
Receives the RC network of the PLL low pass filter.
Description
USB Data + signal
USB Data - signal
USB Reference Voltage
Connect this pin to D+ using a 1.5 kΩ resistor to use the Detach function.
Description
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 V
V
Port 1
P1 is an 8-bit bidirectional I/O port with internal pull-ups.
Port 2
P2 is an 8-bit bidirectional I/O port with internal pull-ups.
Port 3
P3 is an 8-bit bidirectional I/O port with internal pull-ups.
Port 4
P4 is an 2-bit open port.
SS
.
DD
or
AT89C5131
Alternate Function
CEX[4:0]
LED[3:0]
KIN[7:0]
AD[7:0]
A[15:8]
T2EX
INT0
INT1
RxD
SCL
SDA
TxD
ECI
WR
RD
T2
T0
T1
Alternate
Alternate
Function
Function
-
-
-
-
-
-
9