AT89LP52 Atmel Corporation, AT89LP52 Datasheet - Page 101

• Manufacturer Part Number: AT89LP52
• Manufacturer: Atmel Corporation

Specifications of AT89LP52

• Flash (kbytes): 8 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-1C
• Max I/o Pins: 36
• Uart: 1
• Sram (kbytes): 0.25
• Eeprom (bytes): 256
• Self Program Memory: IAP
• Operating Voltage (vcc): 2.4 to 5.5
• Timers: 3
• Isp: SPI
• Watchdog: Yes

Table 18-1.
Note:
Table 18-2.
18.5
The values shown in this table are valid for T
Table 18-3.
3709D–MICRO–12/11
Symbol
1/t
t
t
t
t
t
Symbol
f
f
Symbol
R
V
V
V
t
t
CLCL
CHCX
CLCX
CLCH
CHCL
XTAL
RC
POR
WDTRST
POR
BOD
BH
RST
CLCL
1. No wait state (single-cycle) fetch speed for Fast Mode
Reset Characteristics
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
Parameter
Reset Pull-up Resistor
Reset Pull-down Resistor
Power-On Reset Threshold
Brown-Out Detector Threshold
Brown-Out Detector Hysteresis
Power-On Reset Delay
Watchdog Reset Pulse Width
External Clock Parameters
Clock Characteristics
Reset Characteristics
(1)
A
= -40°C to 85°C and V
Condition
Low Power Oscillator
High Power Oscillator
T
V
Condition
A
DD
= 25°C; V
V
Min
= 2.4 to 5.5V
50
15
15
0
DD
= 2.4V to 5.5V
DD
= 5.0V
DD
Max
= 2.4 to 5.5V, unless otherwise noted.
20
5
5
49t
1.824
1.751
V
Min
Min
Min
150
100
200
135
1.3
1.9
40
12
12
DD
0
0
0
CLCL
= 4.5V to 5.5V
AT89LP51/52
1.862
1.935
Max
Max
Max
300
200
300
150
1.6
2.2
25
12
24
5
5
Units
Units
Units
MHz
MHz
MHz
MHz
MHz
mV
ns
ns
ns
ns
ns
kΩ
kΩ
µs
ns
V
V
101