AT89LP51ED2 Atmel Corporation, AT89LP51ED2 Datasheet - Page 228
AT89LP51ED2
Manufacturer Part Number
AT89LP51ED2
Description
Manufacturer
Atmel Corporation
Specifications of AT89LP51ED2
Flash (kbytes)
64 Kbytes
Max. Operating Frequency
20 MHz
Cpu
8051-1C
Max I/o Pins
42
Spi
1
Twi (i2c)
1
Uart
1
Adc Channels
7
Adc Resolution (bits)
10
Adc Speed (ksps)
153.8
Sram (kbytes)
2.25
Eeprom (bytes)
4096
Self Program Memory
API
Operating Voltage (vcc)
2.4 to 5.5
Timers
4
Isp
SPI/OCD/UART
Watchdog
Yes
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25.4
The values shown in this table are valid for T
Figure 25-5. External Clock Drive Waveform
Table 25-1.
Table 25-2.
228
Symbol
1/t
t
t
t
t
t
Symbol
f
f
CLCL
CHCX
CLCX
CLCH
CHCL
XTAL
RC
CLCL
Clock Characteristics
AT89LP51RD2/ED2/ID2 Preliminary
Parameter
Oscillator Frequency
Clock Period
External Clock High Time
External Clock Low Time
External Clock Rise Time
External Clock Fall Time
Parameter
Crystal Oscillator Frequency
Internal Oscillator Frequency
External Clock Parameters
Clock Characteristics
A
= -40°C to 85°C and V
Condition
Low Power Oscillator
High Power Oscillator
T
V
A
DD
= 25°C; V
V
Min
= 2.4 to 5.5V
50
DD
0
= 2.4V to 5.5V
DD
= 5.0V
DD
Max
= 2.4 to 5.5V, unless otherwise noted.
20
V
7.92
7.80
Min
Min
40
12
12
DD
0
0
0
= 4.5V to 5.5V
Max
Max
8.08
8.20
25
12
24
5
5
3714A–MICRO–7/11
Units
Units
MHz
MHz
MHz
MHz
MHz
ns
ns
ns
ns
ns
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