AT89S52-24JU Atmel, AT89S52-24JU Datasheet - Page 9
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AT89S52-24JU
Manufacturer Part Number
AT89S52-24JU
Description
IC MCU 8K FLASH 24MHZ 44-PLCC
Manufacturer
Atmel
Series
89Sr
Datasheet
1.AT89S52-24AU.pdf
(38 pages)
Specifications of AT89S52-24JU
Core Processor
8051
Core Size
8-Bit
Speed
24MHz
Connectivity
UART/USART
Peripherals
WDT
Number Of I /o
32
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-PLCC
Package
44PLCC
Device Core
8051
Family Name
89S
Maximum Speed
24 MHz
Operating Supply Voltage
5 V
Data Bus Width
8 Bit
Number Of Programmable I/os
32
Interface Type
UART
Number Of Timers
3
Processor Series
AT89x
Core
8051
Data Ram Size
256 B
Maximum Clock Frequency
33 MHz
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Development Tools By Supplier
AT89ISP
Minimum Operating Temperature
- 40 C
Eeprom Memory
0 Bytes
Input Output
32
Interface
UART
Memory Type
Flash
Number Of Bits
8
Package Type
44-pin PLCC
Programmable Memory
8K Bytes
Timers
3-16-bit
Voltage, Range
4-5.5 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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Part Number:
AT89S52-24JU
Manufacturer:
NXP
Quantity:
3 400
Company:
Part Number:
AT89S52-24JU
Manufacturer:
ATM
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3 000
Company:
Part Number:
AT89S52-24JU
Manufacturer:
ATM
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3 000
Company:
Part Number:
AT89S52-24JU
Manufacturer:
ATMEL
Quantity:
7
Part Number:
AT89S52-24JU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Table 5-3.
Dual Data Pointer Registers: To facilitate accessing both internal and external data memory, two banks of 16-bit Data
Pointer Registers are provided: DP0 at SFR address locations 82H-83H and DP1 at 84H-85H. Bit DPS = 0 in SFR AUXR1
selects DP0 and DPS = 1 selects DP1. The user should ALWAYS initialize the DPS bit to the appropriate value before
accessing the respective Data Pointer Register.
Power Off Flag: The Power Off Flag (POF) is located at bit 4 (PCON.4) in the PCON SFR. POF is set to “1” during power
up. It can be set and rest under software control and is not affected by reset.
Table 5-4.
1919D–MICRO–6/08
AUXR
–
DISALE
DISRTO
WDIDLE
AUXR1
–
DPS
Reserved for future expansion
Disable/Enable ALE
DISALE
0
1
Disable/Enable Reset out
DISRTO
0
1
Disable/Enable WDT in IDLE mode
WDIDLE
0
1
Reserved for future expansion
Data Pointer Register Select
DPS
0
1
AUXR: Auxiliary Register
AUXR1: Auxiliary Register 1
Address = 8EH
Not Bit Addressable
Address = A2H
Not Bit Addressable
Bit
Bit
Operating Mode
ALE is emitted at a constant rate of 1/6 the oscillator frequency
ALE is active only during a MOVX or MOVC instruction
Reset pin is driven High after WDT times out
Reset pin is input only
WDT continues to count in IDLE mode
WDT halts counting in IDLE mode
Selects DPTR Registers DP0L, DP0H
Selects DPTR Registers DP1L, DP1H
–
7
–
7
–
6
–
6
–
5
–
5
WDIDLE
4
–
4
DISRTO
3
–
3
–
2
–
2
Reset Value = XXXXXXX0B
Reset Value = XXX00XX0B
–
1
–
1
DISALE
AT89S52
DPS
0
0
9