AT83C5135 Atmel Corporation, AT83C5135 Datasheet - Page 9
AT83C5135
Manufacturer Part Number
AT83C5135
Description
Manufacturer
Atmel Corporation
Datasheet
1.AT83C5134.pdf
(166 pages)
Specifications of AT83C5135
Max. Operating Frequency
32 MHz
Cpu
8051-12C
Max I/o Pins
34
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
1
Twi (i2c)
1
Uart
1
Sram (kbytes)
1.25
Eeprom (bytes)
512
Operating Voltage (vcc)
2.7 to 3.6
Timers
4
Mask Rom (kbytes)
16
Watchdog
Yes
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7683C–USB–11/07
Table 4-9.
Table 4-10.
Table 4-11.
AD[7:0]
A[15:8]
Signal
XTAL1
XTAL2
Signal
Signal
P3[7:0]
P4[1:0]
Signal
Name
Name
VREF
Name
Name
PLLF
D+
D-
Type
Type
Type
Type
I/O
I/O
I/O
I/O
O
O
I/O
I/O
I
I
Clock Signal Description
USB Signal Description
System Signal Description
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 (See Figure 5-1 on page 11 ).
Description
USB Data + signal
Set to high level under reset.
USB Data - signal
Set to low level under reset.
USB Reference Voltage
Connect this pin to D+ using a 1.5 kΩ resistor to use the Detach function.
Description
Multiplexed Address/Data LSB for external access
Data LSB for Slave port access (used for 8-bit and 16-bit modes)
Address Bus MSB for external access
Data MSB for Slave port access (used for 16-bit mode only)
Description
Port 3
P3 is an 8-bit bidirectional I/O port with internal pull-ups.
Port 4
P4 is an 2-bit open port.
AT83C5134/35/36
Alternate Function
LED[3:0]
INT0
INT1
RxD
SCL
SDA
TxD
WR
RD
T0
T1
Alternate
Alternate
Alternate
Function
Function
Function
P0[7:0]
P2[7:0]
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-
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