AT85C5122D-SISUM Atmel, AT85C5122D-SISUM Datasheet - Page 25
AT85C5122D-SISUM
Manufacturer Part Number
AT85C5122D-SISUM
Description
RFID Modules & Development Tools 3-5.5V Smart Card Reader
Manufacturer
Atmel
Datasheet
1.AT85C5122D-SISUM.pdf
(213 pages)
Specifications of AT85C5122D-SISUM
Product
RFID Readers
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4202E–SCR–06/06
Table 6. Auxiliary Register 1 AUXR1- (0A2h) for AT8xC5122
Reset Value = XX1X XX0X0b (Not bit addressable)
Table 7. Auxiliary Register 1 AUXR1- (0A2h) for AT83C5123
Reset Value = XXXX XX0X0b (Not bit addressable)
Number
Number
7 - 6
7 - 6
Bit
Bit
5
4
3
2
1
0
5
4
3
2
1
0
7
7
-
-
Mnemonic Description
Mnemonic Description
ENBOOT
GF3
DPS
GF3
DPS
Bit
Bit
0
0
-
-
-
-
-
-
6
6
-
-
Reserved
The value read from this bit is indeterminate. Do not change these bits.
Enable Boot ROM (CRAM / E2PROM version only)
Set this bit to map the Boot ROM from 8000h to FFFFh. If the PC increments
beyond 7FFFh address, the code is fetch from internal ROM
Clear this bit to disable Boot ROM. If the PC increments beyond 7FFFh address,
the code is fetch from external code memory (C51 standard roll over function)
This bit is forced to 1 at reset
Reserved
The value read from this bit is indeterminate. Do not change this bit.
This bit is a general-purpose user flag.
Always cleared.
Reserved
The value read from this bit is indeterminate. Do not change this bit.
Data Pointer Selection
Cleared to select DPTR0. Set to select DPTR1.
Reserved
The value read from this bit is indeterminate. Do not change these bits.
Reserved
The value read from this bit is indeterminate. Do not change these bits.
Reserved
The value read from this bit is indeterminate. Do not change this bit.
This bit is a general-purpose user flag.
Always cleared.
Reserved
The value read from this bit is indeterminate. Do not change this bit.
Data Pointer Selection
Cleared to select DPTR0.
Set to select DPTR1.
ENBOOT
5
5
-
4
4
-
-
GF3
GF3
3
3
2
2
AT8xC5122/23
0
0
1
1
-
-
DPS
DPS
0
0
25
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