TS87C54X2-VIA Atmel, TS87C54X2-VIA Datasheet - Page 28
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TS87C54X2-VIA
Manufacturer Part Number
TS87C54X2-VIA
Description
IC MCU 8BIT 16K OTP 40MHZ 40-DIP
Manufacturer
Atmel
Series
87Cr
Datasheet
1.TS87C54X2-LIC.pdf
(62 pages)
Specifications of TS87C54X2-VIA
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
-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
-
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