TS87C54X2-VCB Atmel, TS87C54X2-VCB Datasheet - Page 28

• Manufacturer Part Number: TS87C54X2-VCB
• Description: IC MCU 8BIT 16K OTP 40MHZ 44PLCC
• Manufacturer: Atmel
• Series: 87Cr

Specifications of TS87C54X2-VCB

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40/30MHz
• Connectivity: UART/USART
• Peripherals: POR, WDT
• Number Of I /o: 32
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: OTP
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

28
AT/TS8xC54/8X2
Table 10-4.
Reset Value = XX00 0000b
Not bit addressable
Number
Bit
7
6
5
4
3
2
1
0
7
-
Mnemonic
PX1H
PX0H
PT2H
PT1H
PT0H
PSH
Bit
IPH Register
IPH - Interrupt Priority High Register (B7h)
-
-
6
-
Reserved
Reserved
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.
The value read from this bit is indeterminate. Do not set this bit.
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
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
5
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
PSH
4
PT1H
3
Description
PX1H
2
PT0H
1
4431E–8051–04/06
PX0H
0