AT89C51RD2 Atmel Corporation, AT89C51RD2 Datasheet - Page 77
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
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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
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20 000
Company:
Part Number:
AT89C51RD2-RDTUM
Manufacturer:
MICRON
Quantity:
1 000
4235K–8051–05/08
Table 17-6.
IEN1 - Interrupt Enable Register (B1h)
Reset Value = XXXX X000b
Bit addressable
Number
Bit
7
7
6
5
4
3
2
1
0
-
Mnemonic
IEN1 Register
ESPI
KBD
Bit
6
-
-
-
-
-
-
Description
Reserved
Reserved
Reserved
Reserved
Reserved
SPI interrupt Enable bit
Cleared to disable SPI interrupt.
Set to enable SPI interrupt.
Reserved
Keyboard interrupt Enable bit
Cleared to disable keyboard interrupt.
Set to enable keyboard interrupt.
5
-
4
-
3
-
AT89C51RD2/ED2
ESPI
2
1
-
KBD
0
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