AT89C55WD-24JC Atmel, AT89C55WD-24JC Datasheet - Page 8
AT89C55WD-24JC
Manufacturer Part Number
AT89C55WD-24JC
Description
IC MICRO CTRL 24MHZ 44PLCC
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C55WD-24AU.pdf
(35 pages)
Specifications of AT89C55WD-24JC
Core Processor
8051
Core Size
8-Bit
Speed
24MHz
Connectivity
UART/USART
Peripherals
WDT
Number Of I /o
32
Program Memory Size
20KB (20K x 8)
Program Memory Type
FLASH
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
44-PLCC
Data Bus Width
8 bit
Data Ram Size
256 B
Maximum Clock Frequency
33 MHz
Number Of Programmable I/os
32
Number Of Timers
3 x 16 bit
Operating Supply Voltage
4 V to 5.5 V
Maximum Operating Temperature
+ 70 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
0 C
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Lead Free Status / Rohs Status
No RoHS Version Available
Other names
AT89C55WD24JC
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89C55WD-24JC
Manufacturer:
ATM
Quantity:
2 340
Company:
Part Number:
AT89C55WD-24JC
Manufacturer:
ATM
Quantity:
2 340
Company:
Part Number:
AT89C55WD-24JC
Manufacturer:
TOSHIBA
Quantity:
700
Company:
Part Number:
AT89C55WD-24JC
Manufacturer:
ATMEL
Quantity:
18
Part Number:
AT89C55WD-24JC
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Table 5-3.
Table 5-4.
8
AUXR
–
DISALE
DISRTO
WDIDLE
AUXR1
–
DPS
AT89C55WD
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
Operating Mode
Reset pin is driven High after WDT times out
Reset pin is input only
Operating Mode
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
DPS
0
0
1921D–MICRO–6/08