AT89LP51RC2 Atmel Corporation, AT89LP51RC2 Datasheet - Page 229
AT89LP51RC2
Manufacturer Part Number
AT89LP51RC2
Description
Manufacturer
Atmel Corporation
Specifications of AT89LP51RC2
Flash (kbytes)
32 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)
1.375
Self Program Memory
API
Operating Voltage (vcc)
2.4 to 5.5
Timers
4
Isp
SPI/OCD/UART
Watchdog
Yes
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Figure 25-6. Typical Internal Oscillator Frequency vs. VCC
25.5
The values shown in this table are valid for T
Table 25-3.
25.6
The values shown in this table are valid for T
ating conditions, load capacitance for Port 0, ALE and PSEN = 100 pF; load capacitance for all other outputs = 80 pF.
Parameters refer to
Table 25-4.
3722A–MICRO–10/11
Symbol
R
V
V
V
t
t
Symbol
1/t
t
t
t
t
t
t
LHLL
AVLL
LLAX
LLIV
LLPL
PLPH
POR
W DTRST
POR
BOD
BH
RST
CLCL
Reset Characteristics
External Memory Characteristics
Parameter
Reset Pull-up Resistor
Power-On Reset Threshold
Brown-Out Detector Threshold
Brown-Out Detector Hysteresis
Power-On Reset Delay
Watchdog Reset Pulse Width
Parameter
Oscillator Frequency
ALE Pulse Width
Address Valid to ALE Low
Address Hold after ALE Low
ALE Low to Valid Instruction In
ALE Low to PSEN Low
PSEN Pulse WIdth
External Program and Data Memory Characteristics
Reset Characteristics
Figure
8.10
8.05
8.00
7.95
7.90
7.85
7.80
2.4
25-7,
Figure 25-8
2.7
A
A
and
= -40°C to 85°C and V
= -40°C to 85°C and V
Figure
Vcc (V)
Condition
AT89LP51RB2/RC2/IC2 Preliminary
0.5t
0.5t
0.5t
1.5t
3.0
25-9.
t
CLCL
CLCL
CLCL
CLCL
CLCL
Compatibility Mode
Min
0
- d
- d
- d
- d
- d
(2)
(3)
(2)
(2)
DD
DD
3.3
2t
= 2.4 to 5.5V, unless otherwise noted. Under oper-
= 2.4 to 5.5V, unless otherwise noted.
CLCL
Max
24
(1)
- d
49t
3.6
Min
200
135
0.5t
0.5t
0.5t
1.5t
1.3
1.9
50
CLCL
t
CLCL
CLCL
CLCL
CLCL
CLCL
Min
0
- d
- d
- d
- d
- d
Fast Mode
(4)
(2)
(3)
(2)
(2)
-40C
0C
25C
70C
85C
Max
150
300
150
1.6
2.2
(1)
2t
CLCL
Max
24
- d
Units
mV
kΩ
µs
ns
V
V
Units
MHz
ns
ns
ns
ns
ns
ns
229
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