AT89C51RD2-RLRIM Atmel, AT89C51RD2-RLRIM Datasheet - Page 79
AT89C51RD2-RLRIM
Manufacturer Part Number
AT89C51RD2-RLRIM
Description
IC MCU FLASH 8051 EEP 64K 44VQFP
Manufacturer
Atmel
Series
89Cr
Datasheet
1.ATWEBDVK-02RC.pdf
(137 pages)
Specifications of AT89C51RD2-RLRIM
Core Processor
8051
Core Size
8-Bit
Speed
60MHz
Connectivity
SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
34
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
For Use With
AT89STK-11 - KIT STARTER FOR AT89C51RX2
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Other names
AT89C51RD2RLRIMTR
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4235K–8051–05/08
Table 17-8.
IPH1 - Interrupt Priority High Register (B3h)
Reset Value = XXXX X000b
Not bit addressable
Number
Bit
7
7
6
5
4
3
2
1
0
-
Mnemonic
IPH1 Register
KBDH
SPIH
Bit
6
-
-
-
-
-
-
-
Description
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
SPI interrupt Priority High bit
SPIHSPILPriority Level
0
0
1
1
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Keyboard interrupt Priority High bit
KB DHKBDLPriority Level
0
0
1
1
5
-
0 Lowest
1
0
1 Highest
0 Lowest
1
0
1 Highest
4
-
3
-
AT89C51RD2/ED2
SPIH
2
1
-
KBDH
0
79
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