AT89C51ID2-SLRUM Atmel, AT89C51ID2-SLRUM Datasheet - Page 113
AT89C51ID2-SLRUM
Manufacturer Part Number
AT89C51ID2-SLRUM
Description
IC 8051 MCU 64K FLASH 44-PLCC
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51ID2-RLTUM.pdf
(157 pages)
Specifications of AT89C51ID2-SLRUM
Core Processor
8051
Core Size
8-Bit
Speed
60MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
34
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-PLCC
Processor Series
AT89x
Core
8051
Data Bus Width
8 bit
Data Ram Size
2 KB
Interface Type
UART, SPI, TWI
Maximum Clock Frequency
60 MHz
Number Of Programmable I/os
32
Number Of Timers
3
Operating Supply Voltage
2.7 V to 5.5 V
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
-
Lead Free Status / Rohs Status
Details
Other names
AT89C51ID2-SLRUMTR
Available stocks
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Part Number
Manufacturer
Quantity
Price
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Read Data
4289C–8051–11/05
The following procedure is used to read the data stored in the EEPROM memory:
•
•
•
•
•
•
•
Figure 44. Recommended EEPROM Data Read Sequence
Check EEBUSY flag
If the user application interrupts routines use XRAM memory space: Save and
disable interrupts.
Load DPTR with the address to read
Set bit EEE of EECON register
Execute a MOVX A, @DPTR
Clear bit EEE of EECON register
Restore interrupts.
Exec: MOVX A, @DPTR
EEPROM Data Mapping
EEPROM Data Mapping
EECON = 00h (EEE = 0
EEPROM Data Read
EECON = 02h (EEE=1)
Save & Disable IT
DPTR= Address
Sequence
ACC= Data
Last Byte
Cleared?
Data Read
to Read?
Restore IT
EEBusy
EA= 0
AT89C51ID2
113
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