AT89LP51ED2-20AU Atmel, AT89LP51ED2-20AU Datasheet - Page 238

• Manufacturer Part Number: AT89LP51ED2-20AU
• Description: 8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V
• Manufacturer: Atmel

Specifications of AT89LP51ED2-20AU

• Rohs: yes
• Core: 8051
• Processor Series: AT89x
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 20 MHz
• Program Memory Size: 64 KB
• Data Ram Size: 256 B
• On-chip Adc: Yes
• Operating Supply Voltage: 2.4 V to 5.5 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: TQFP-44
• Mounting Style: SMD/SMT
• Data Rom Size: 4 KB
• Interface Type: 2-Wire, SPI, UART
• Number Of Programmable I/os: 36
• Number Of Timers: 3
• Program Memory Type: Flash
• Factory Pack Quantity: 160

25.12 Test Conditions
25.12.1
Note:
25.12.2
Note:
25.12.3
238
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
AT89LP51RD2/ED2/ID2 Preliminary
AC Testing Input/Output Waveform
Float Waveform
I
CC
V
float when 100 mV change from the loaded V
IH
Test Condition: Active Mode
min. for a logic “1” and V
Figure 25-17. Connection Diagram for I
For active supply current measurements all ports are configured in quasi-bidirectional mode.
Timers 0, 1 and 2 are configured to be free running in their default timer modes. The CPU exe-
cutes a simple random number generator that accesses RAM, the SFR bus and exercises the
ALU and hardware multiplier.
(1)
IL
max. for a logic “0”.
Disconnected
DD
(1)
- 0.5V for a logic “1” and 0.45V for a logic “0”. Timing measurements are made at
OH
/V
CLOCK SIGNAL
OL
level occurs.
GND
(NC)
CC
V
DD
Active Measurement. All Other Pins are
RST
POL
X T AL 2
X T AL 1
GND
V
DD
I
CC
V
DD
3714A–MICRO–7/11