AT83EB5114 Atmel Corporation, AT83EB5114 Datasheet - Page 4

• Manufacturer Part Number: AT83EB5114
• Manufacturer: Atmel Corporation

Specifications of AT83EB5114

• Max. Operating Frequency: 24 MHz
• Cpu: 8051-12C
• Max I/o Pins: 11
• Adc Channels: 6
• Adc Resolution (bits): 10
• Adc Speed (ksps): 50
• Sram (kbytes): 0.25
• Eeprom (bytes): 256
• Operating Voltage (vcc): 3.0 to 3.6
• Timers: 4
• Mask Rom (kbytes): 4
• Watchdog: Yes

Pin Description
4
SO20
12
18
19
20
14
15
17
16
13
10
11
9
8
5
6
7
1
2
3
4
AT89/83EB5114
SO24
14
22
13
23
24
17
18
20
19
15
11
10
9
5
6
8
1
2
3
4
Mnemonic
P3.0-P3.7
P4.0-P4.3
XTAL1
XTAL2
VREF
Vssa
Vcca
RST
V
V
R
C
SS
CC
Analog VREF: A/D converter positive reference input, output of the internal voltage reference
Analog Resistor Input for the precision RC oscillator
Analog Capacitor Input for the precision RC oscillator
Power
Power
Power
Power
Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
I
Name and Function
Ground: 0V reference
Analog Ground: 0V reference for analog part
Power Supply: This is the power supply voltage for normal, idle and power-down operation.
Analog Power Supply: This is the power supply voltage for analog part
This pin must be connected to power supply.
Input to the inverting oscillator amplifier and input to the internal clock generator circuit
Reset input with integrated pull-up
A low level on this pin for two machine cycles while the oscillator is running, resets the device.
Port 3: Port 3 is an 8-bit programmable I/O port with internal pull-ups. See “Port Types” on
page 32. for a description of I/O ports.
Port 3 also serves the special features of the 80C51 family, as listed below.
W0M0 (P3.0): External I/O for PWMU 0 module 0
W0M1 (P3.1): External I/O for PWMU 0 module 1
INT0 (P3.2): External interrupt 0
W0M2 / AIN4 (P3.3): External I/O for PWMU 0 module 2. P3.3 is also an input of the analog to
digital converter.
T0 / AIN5(P3.4): Timer 0 external input. P3.4 is also an input of the analog to digital converter.
W1M0 (P3.5): External I/O for PWMU 1 module 0, can also be used to output the external
clocking signal
Port 4: Port 4 is an 4-bit programmable I/O port with internal pull-ups. See “Port Types” on
page 32. for a description of I/O ports.
Port 4 is also the input port of the Analog to digital converter
AIN0 (P4.0): A/D converter input 0
AIN1 (P4.1): A/D converter input 1
T1: Timer 1 external input
AIN2 (P4.2): A/D converter input 2
W1CI: Count input of PWMU1
AIN3 (P4.3): A/D converter input 3, programmable gain
INT1: External interrupt 1
Output from the inverting oscillator amplifier. This pin can’t be connected to the ground.
W0CI: Count input of PWMU0
4311C–8051–02/08