TS87C51RB2-LIA Atmel, TS87C51RB2-LIA Datasheet - Page 43

• Manufacturer Part Number: TS87C51RB2-LIA
• Description: IC MCU 8BIT 16K OTP 30MHZ 40-DIP
• Manufacturer: Atmel
• Series: 87Cr

Specifications of TS87C51RB2-LIA

• 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: 16KB (16K x 8)
• Program Memory Type: OTP
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

IPH - Interrupt Priority High Register (B7h)
Reset Value = X000 0000b
Not bit addressable
Rev. C - 06 March, 2001
Number
Bit
7
6
5
4
3
2
1
0
7
-
Mnemonic
PPCH
PX1H
PX0H
PT2H
PT1H
PT0H
PSH
Bit
PPCH
-
6
Reserved
PCA interrupt priority bit high.
Timer 2 overflow interrupt Priority High bit
Serial port Priority High bit
Timer 1 overflow interrupt Priority High bit
External interrupt 1 Priority High bit
Timer 0 overflow interrupt Priority High bit
External interrupt 0 Priority High bit
The value read from this bit is indeterminate. Do not set this bit.
PPCH
0
0
1
1
PT2H
0
0
1
1
PSH
0
0
1
1
PT1H
0
0
1
1
PX1H
0
0
1
1
PT0H
0
0
1
1
PX0H
0
0
1
1
PT2H
5
Table 21. IPH Register
PPC
0
1
0
1
PT2
0
1
0
1
PS
0
1
0
1
PT1
0
1
0
1
PX1
0
1
0
1
PT0
0
1
0
1
PX0
0
1
0
1
PSH
4
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
PT1H
3
Description
TS83C51RB2/RC2/RD2
TS87C51RB2/RC2/RD2
PX1H
2
TS80C51RA2/RD2
PT0H
1
PX0H
0
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