AT89C5131-S3SIL Atmel, AT89C5131-S3SIL Datasheet - Page 48
AT89C5131-S3SIL
Manufacturer Part Number
AT89C5131-S3SIL
Description
IC 8051 MCU FLASH 32K USB 52PLCC
Manufacturer
Atmel
Series
AT89C513xr
Datasheet
1.AT89C5131-S3SIL.pdf
(176 pages)
Specifications of AT89C5131-S3SIL
Core Processor
C52X2
Core Size
8-Bit
Speed
48MHz
Connectivity
I²C, SPI, UART/USART, USB
Peripherals
LED, POR, PWM, WDT
Number Of I /o
34
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
1.25K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
52-PLCC
For Use With
AT89STK-10 - KIT EVAL APPL MASS STORAGEAT89STK-05 - KIT STARTER FOR AT89C5131
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Data Converters
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AT89C5131
Table 46. AUXR Register
AUXR - Auxiliary Register (8Eh)
Reset Value = 0X0X 1100b
Not bit addressable
Number
DPU
Bit
7
6
5
4
3
2
1
0
7
Mnemonic
EXTRAM
XRS1
XRS0
DPU
Bit
M0
AO
6
-
-
-
Description
Disable Weak Pull Up
Cleared to enabled weak pull up on standard Ports.
Set to disable weak pull up on standard Ports.
Reserved
The value read from this bit is indeterminate. Do not set this bit
Pulse length
Cleared to stretch MOVX control: the RD and the WR pulse length is 6 clock
periods (default).
Set to stretch MOVX control: the RD and the WR pulse length is 30 clock
periods.
Reserved
The value read from this bit is indeterminate. Do not set this bit
ERAM Size
XRS1
0
0
1
1
EXTRAM bit
Cleared to access internal ERAM using MOVX at Ri at DPTR.
Set to access external memory.
ALE Output bit
Cleared, ALE is emitted at a constant rate of 1/6 the oscillator frequency (or
1/3 if X2 mode is used) (default).
Set, ALE is active only when a MOVX or MOVC instruction is used.
M0
5
XRS0
0
1
0
1
4
-
ERAM size
256 bytes
512 bytes
768 bytes
1024 bytes (default)
XRS1
3
XRS0
2
EXTRAM
1
4136B–USB–09/03
AO
0
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