AT89C51ED2-SLSUM Atmel, AT89C51ED2-SLSUM Datasheet - Page 15
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AT89C51ED2-SLSUM
Manufacturer Part Number
AT89C51ED2-SLSUM
Description
IC 8051 MCU FLASH 64K 44PLCC
Manufacturer
Atmel
Series
89Cr
Datasheet
1.ATWEBDVK-02RC.pdf
(137 pages)
Specifications of AT89C51ED2-SLSUM
Core Processor
8051
Core Size
8-Bit
Speed
60MHz
Connectivity
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
Package
44PLCC
Device Core
8051
Family Name
89C
Maximum Speed
40 MHz
Operating Supply Voltage
3.3|5 V
Data Bus Width
8 Bit
Number Of Programmable I/os
34
Interface Type
SPI/UART
Number Of Timers
3
Processor Series
AT89x
Core
8051
Data Ram Size
2 KB
Maximum Clock Frequency
40 MHz
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Minimum Operating Temperature
- 40 C
Cpu Family
AT89
Device Core Size
8b
Frequency (max)
40MHz
Total Internal Ram Size
2KB
# I/os (max)
34
Number Of Timers - General Purpose
3
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
2.7V
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
44
Package Type
PLCC
For Use With
AT89OCD-01 - USB EMULATOR FOR AT8XC51 MCU
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89C51ED2-SLSUM
Manufacturer:
MITSUBISHI
Quantity:
43
Part Number:
AT89C51ED2-SLSUM
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
6. Oscillator
6.1
4235K–8051–05/08
Registers
To optimize the power consumption and execution time needed for a specific task, an internal
prescaler feature has been implemented between the oscillator and the CPU and peripherals.
Table 6-1.
CKRL – Clock Reload Register (97h)
Reset Value = 1111 1111b
Not bit addressable
Table 6-2.
PCON – Power Control Register (87h)
Reset Value = 00X1 0000b Not bit addressable
SMOD1
CKRL7
Bit Number
Bit Number
7
7
7:0
7
6
5
4
3
2
1
0
CKRL Register
PCON Register
SMOD0
CKRL6
6
6
Bit Mnemonic
Mnemonic
SMOD1
SMOD0
CKRL
POF
GF1
GF0
IDL
PD
-
CKRL5
5
-
5
Description
Clock Reload Register
Prescaler value
Description
Serial Port Mode bit 1
Set to select double baud rate in mode 1, 2 or 3.
Serial Port Mode bit 0
Cleared to select SM0 bit in SCON register.
Set to select FE bit in SCON register.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Power-off Flag
Cleared by software to recognize the next reset type.
Set by hardware when V
set by software.
General-purpose Flag
Cleared by software for general-purpose usage.
Set by software for general-purpose usage.
General-purpose Flag
Cleared by software for general-purpose usage.
Set by software for general-purpose usage.
Power-down Mode bit
Cleared by hardware when reset occurs.
Set to enter power-down mode.
Idle Mode bit
Cleared by hardware when interrupt or reset occurs.
Set to enter idle mode.
CKRL4
POF
4
4
CKRL3
GF1
3
3
CC
rises from 0 to its nominal voltage. Can also be
AT89C51RD2/ED2
CKRL2
GF0
2
2
CKRL1
PD
1
1
CKRL0
IDL
0
0
15