AT89C51RE2 Atmel Corporation, AT89C51RE2 Datasheet - Page 169
AT89C51RE2
Manufacturer Part Number
AT89C51RE2
Description
Manufacturer
Atmel Corporation
Specifications of AT89C51RE2
Flash (kbytes)
128 Kbytes
Max. Operating Frequency
60 MHz
Cpu
8051-12C
Max I/o Pins
34
Spi
1
Uart
2
Sram (kbytes)
8.25
Self Program Memory
API
Operating Voltage (vcc)
2.7 to 5.5
Timers
4
Isp
UART/OCD
Watchdog
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89C51RE2-RLTEM
Manufacturer:
BPS
Quantity:
30 000
Company:
Part Number:
AT89C51RE2-RLTUM
Manufacturer:
MSC
Quantity:
1 560
Company:
Part Number:
AT89C51RE2-SLRUM
Manufacturer:
Atmel
Quantity:
759
Company:
Part Number:
AT89C51RE2-SLSUM
Manufacturer:
HONEYWELL
Quantity:
101
Company:
Part Number:
AT89C51RE2-UM
Manufacturer:
XILINX
Quantity:
101
External Program
Memory
Characteristics
7663E–8051–10/08
Example: T
x = 35 ns
T 50 ns
T
Table 119. Symbol Description
Table 120. AC Parameters for a Fix Clock
Notes:
CCIV
Symbol
= 4T - x = 165 ns
T
T
T
T
T
T
T
T
T
T
T
AVLL
LLAX
PLPH
PLAZ
LHLL
LLPL
PXIX
PXIZ
AVIV
LLIV
PLIV
T
1. ‘ -L ‘ refers to 2V - 5.5V version.
2. ‘ -M ’ refers to 4.5V to 5.5V version.
Symbol
T
T
T
T
T
T
T
T
T
T
T
LLIU
PLPH
LHLL
AVLL
LLAX
LLPL
PLAZ
PLIV
PXIX
PXIZ
AVIV
LLIV
T
for -M and 20 MHz, Standard clock.
Min
25
35
50
5
5
5
0
Parameter
Oscillator clock period
ALE pulse width
Address Valid to ALE
Address Hold After ALE
ALE to Valid Instruction In
ALE to PSEN
PSEN Pulse Width
PSEN to Valid Instruction In
Input Instruction Hold After PSEN
Input Instruction Float After PSEN
Address to Valid Instruction In
PSEN Low to Address Float
-M
(1)
Max
n 65
30
10
80
10
Min
25
35
50
5
5
5
0
-L
(2)
Max
AT89C51RE2
65
30
10
80
10
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
169