AT89C51ID2-RLRIM Atmel, AT89C51ID2-RLRIM Datasheet - Page 70
AT89C51ID2-RLRIM
Manufacturer Part Number
AT89C51ID2-RLRIM
Description
IC MCU FLASH 8051 64K 5V 44-VQFP
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51ID2-RLTUM.pdf
(157 pages)
Specifications of AT89C51ID2-RLRIM
Core Processor
8051
Core Size
8-Bit
Speed
60MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
34
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
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
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Data Converters
-
Other names
AT89C51ID2RLRIMTR
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AT89C51ID2
Table 55. IPH1 Register
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 Description
KBDH
TWIH
SPIH
Bit
6
-
-
-
-
-
-
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
SPIH
0
0
1
1
TWI interrupt Priority High bit
TWIH
0
0
1
1
Keyboard interrupt Priority High bit
KB DH
0
0
1
1
5
-
TWILPriority Level
KBDLPriority Level
SPILPriority Level
0 Lowest
1
0
1 Highest
0 Lowest
1
0
1 Highest
0 Lowest
1
0
1 Highest
4
-
3
-
SPIH
2
TWIH
1
4289C–8051–11/05
KBDH
0
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