AT89C51RD2 Atmel Corporation, AT89C51RD2 Datasheet - Page 118
AT89C51RD2
Manufacturer Part Number
AT89C51RD2
Description
Manufacturer
Atmel Corporation
Specifications of AT89C51RD2
Flash (kbytes)
64 Kbytes
Max. Operating Frequency
60 MHz
Cpu
8051-12C
Max I/o Pins
32
Spi
1
Uart
1
Sram (kbytes)
2
Self Program Memory
API
Operating Voltage (vcc)
2.7 to 5.5
Timers
4
Isp
UART
Watchdog
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89C51RD2-3CSIM
Manufacturer:
ATMEL
Quantity:
1 080
Company:
Part Number:
AT89C51RD2-CM
Manufacturer:
IR
Quantity:
11
Part Number:
AT89C51RD2-CM
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
AT89C51RD2-IM
Manufacturer:
AT
Quantity:
5
Part Number:
AT89C51RD2-IM
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
AT89C51RD2-RDTUM
Manufacturer:
MICRON
Quantity:
1 000
25.3.2
118
AT89C51RD2/ED2
External Program Memory Characteristics
Table 25-1.
Table 25-2.
Symbol
T
T
T
T
T
T
T
T
T
T
T
PLPH
LHLL
AVLL
LLAX
PLAZ
LLPL
PLIV
PXIX
PXIZ
AVIV
LLIV
T
Symbol Description
AC Parameters for a Fix Clock
Symbol
T
T
T
T
T
T
T
T
T
T
T
PLPH
LHLL
AVLL
LLAX
LLPL
PLAZ
LLIV
PLIV
PXIX
PXIZ
AVIV
T
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
Min
25
35
50
5
5
5
0
-M
Max
n 65
30
10
80
10
4235K–8051–05/08
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns