AT87C51RD2-SLSUL Atmel, AT87C51RD2-SLSUL Datasheet - Page 42
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AT87C51RD2-SLSUL
Manufacturer Part Number
AT87C51RD2-SLSUL
Description
IC 8051 MCU 64K OTP 30MHZ 44PLCC
Manufacturer
Atmel
Series
87Cr
Datasheet
1.TS87C51RB2-VIA.pdf
(86 pages)
Specifications of AT87C51RD2-SLSUL
Core Processor
8051
Core Size
8-Bit
Speed
30/20MHz
Connectivity
UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
32
Program Memory Size
64KB (64K x 8)
Program Memory Type
OTP
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-PLCC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
42
AT/TS8xC51Rx2
Table 6-18.
Reset Value = X000 0000b
Bit addressable
Bit Number
7
7
6
5
4
3
2
1
0
-
Bit Mnemonic
IP Register
IP - Interrupt Priority Register (B8h)
PPC
6
PPC
PT2
PT1
PX1
PT0
PX0
PS
-
PT2
5
Description
Reserved
The value read from this bit is indeterminate. Do not set this bit.
PCA interrupt priority bit
Refer to PPCH for priority level.
Timer 2 overflow interrupt Priority bit
Refer to PT2H for priority level.
Serial port Priority bit
Refer to PSH for priority level.
Timer 1 overflow interrupt Priority bit
Refer to PT1H for priority level.
External interrupt 1 Priority bit
Refer to PX1H for priority level.
Timer 0 overflow interrupt Priority bit
Refer to PT0H for priority level.
External interrupt 0 Priority bit
Refer to PX0H for priority level.
PS
4
PT1
3
PX1
2
PT0
1
4188F–8051–01/08
PX0
0