AT89C5115 Atmel Corporation, AT89C5115 Datasheet - Page 28

• Manufacturer Part Number: AT89C5115
• Manufacturer: Atmel Corporation

Specifications of AT89C5115

• Flash (kbytes): 16 Kbytes
• Max. Operating Frequency: 40 MHz
• Cpu: 8051-12C
• Max I/o Pins: 20
• Uart: 1
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 62.5
• Sram (kbytes): 0.5
• Eeprom (bytes): 2048
• Self Program Memory: API
• Operating Voltage (vcc): 3.0 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

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AT89C5115
Table 18. AUXR1 Register
AUXR1 (S:A2h)
Auxiliary Control Register 1
Reset Value = XXXX 00X0b
Note:
Number
7 - 6
Bit
7
5
4
3
2
1
0
-
1. ENBOOT is initialized with the invert BLJB at reset. See In-System Programming
section.
Mnemonic
ENBOOT
DPS
GF3
Bit
6
0
-
-
-
-
(1)
Description
Reserved
The value read from these bits is indeterminate. Do not set these bits.
Enable Boot Flash
Set this bit to map the boot Flash between F800h -FFFFh
Clear this bit to disable boot Flash.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
General Purpose Flag 3
Always Zero
This bit is stuck to logic 0 to allow INC AUXR1 instruction without affecting GF3
flag.
Reserved for Data Pointer Extension
Data Pointer Select bit
Set to select second dual data pointer: DPTR1.
Clear to select first dual data pointer: DPTR0.
ENBOOT
5
4
-
GF3
3
2
0
1
-
4128G–8051–02/08
DPS
0