AT89S52-24JI Atmel, AT89S52-24JI Datasheet - Page 14
AT89S52-24JI
Manufacturer Part Number
AT89S52-24JI
Description
IC MCU 8K FLASH 24MHZ 44-PLCC
Manufacturer
Atmel
Series
89Sr
Datasheet
1.AT89S52-24AU.pdf
(38 pages)
Specifications of AT89S52-24JI
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
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
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Company
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Manufacturer
Quantity
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Figure 10-2. Timer 2 Auto Reload Mode (DCEN = 0)
Figure 10-3. Timer 2 Auto Reload Mode (DCEN = 1)
14
T2EX PIN
OSC
AT89S52
OSC
T2 PIN
T2 PIN
÷
12
÷12
TRANSITION
DETECTOR
C/T2 = 0
C/T2 = 1
C/T2 = 0
C/T2 = 1
TR2
CONTROL
EXEN2
(DOWN COUNTING RELOAD VALUE)
(UP COUNTING RELOAD VALUE)
CONTROL
TR2
CONTR OL
RELO AD
RCAP2H
0FFH
TH2
RCAP2L
0FFH
RCAP2H
TL2
TH2
OVERFLOW
RCAP2L
TL2
T2EX PIN
COUNT
DIRECTION
1=UP
0=DOWN
OVERFLOW
EXF2
TF2
TOGGLE
INTERRUPT
TIMER 2
TF2
INTERRUPT
TIMER 2
1919D–MICRO–6/08
EXF2