TS80C54 ATMEL [ATMEL Corporation], TS80C54 Datasheet - Page 12

• Manufacturer Part Number: TS80C54
• Description: 8-bit CMOS Microcontroller 16/32 Kbytes ROM/OTP
• Manufacturer: ATMEL [ATMEL Corporation]

12
AT/TS8xC54/8X2
Table 7-1.
Reset Value = XXXX 00X0
Not bit addressable
User software should not write 1s to reserved bits. These bits may be used in future 8051 family
products to invoke new feature. In that case, the reset value of the new bit will be 0, and its
active value will be 1. The value read from a reserved bit is indeterminate.
Number
Bit
7
6
5
4
3
2
1
0
7
-
Mnemonic
DPS
GF3
Bit
AUXR1: Auxiliary Register 1
0
-
-
-
-
-
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.
This bit is a general purpose user flag
Reserved
Always stuck at 0.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Data Pointer Selection
Clear to select DPTR0.
Set to select DPTR1.
5
-
4
-
GF3
3
Description
2
0
1
-
4431E–8051–04/06
DPS
0