AT89C2051-12PU Atmel, AT89C2051-12PU Datasheet - Page 14

• Manufacturer Part Number: AT89C2051-12PU
• Description: IC 8051 MCU FLASH 2K 20DIP
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C2051-12PU

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 12MHz
• Connectivity: UART/USART
• Peripherals: LED
• Number Of I /o: 15
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-DIP (0.300", 7.62mm)
• Package: 20PDIP W
• Device Core: 8051
• Family Name: 89C
• Maximum Speed: 12 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 15
• Interface Type: UART
• Number Of Timers: 2
• Processor Series: AT89x
• Core: 8051
• Data Ram Size: 128 B
• Maximum Clock Frequency: 12 MHz
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

21. Shift Register Mode Timing Waveforms
22. AC Testing Input/Output Waveforms
Note:
23. Float Waveforms
Note:
14
1. AC Inputs during testing are driven at V
1. For timing purposes, a port pin is no longer floating when a 100 mV change from load voltage occurs. A port pin begins to
AT89C2051
min. for a logic 1 and V
float when 100 mV change from the loaded V
(1)
IL
max. for a logic 0.
CC
- 0.5V for a logic 1 and 0.45V for a logic 0. Timing measurements are made at V
OH
/V
OL
level occurs.
(1)
0368H–MICRO–6/08
IH