AT89C55WD-24JC Atmel, AT89C55WD-24JC Datasheet - Page 19
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
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Quantity
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AT89C55WD-24JC
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Quantity:
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1921D–MICRO–6/08
Figure 18-1. Oscillator Connections
Note:
Figure 18-2. External Clock Drive Configuration
Table 18-1.
Mode
Idle
Idle
Power-down
Power-down
C1, C2 = 30 pF ± 10 pF for Crystals
Status of External Pins During Idle and Power-down Modes
= 40 pF ± 10 pF for Ceramic Resonators
Program
Memory
Internal
External
Internal
External
OSCILLATOR
EXTERNAL
SIGNAL
ALE
1
1
0
0
NC
C2
C1
PSEN
1
1
0
0
PORT0
Float
Float
Data
Data
XTAL2
XTAL1
GND
XTAL2
XTAL1
GND
PORT1
Data
Data
Data
Data
AT89C55WD
Address
PORT2
Data
Data
Data
PORT3
Data
Data
Data
Data
19