AT89C52-33AI Atmel, AT89C52-33AI Datasheet - Page 9
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AT89C52-33AI
Manufacturer Part Number
AT89C52-33AI
Description
IC 8051 MCU FLASH 8K 44TQFP
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C52-24AC.pdf
(24 pages)
Specifications of AT89C52-33AI
Core Processor
8051
Core Size
8-Bit
Speed
33MHz
Connectivity
SIO, UART/USART
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 ~ 6 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Peripherals
-
Figure 3. Timer 2 Auto Reload Mode (DCEN = 1)
Figure 4. Timer 2 in Baud Rate Generator Mode
T2EX PIN
OSC
OSC
T2 PIN
÷
T2 PIN
12
÷
2
TRANSITION
DETECTOR
NOTE: OSC. FREQ. IS DIVIDED BY 2, NOT 12
C/T2 = 0
C/T2 = 1
C/T2 = 0
C/T2 = 1
TR2
EXEN2
TR2
CONTROL
CONTROL
CONTROL
(DOWN COUNTING RELOAD VALUE)
(UP COUNTING RELOAD VALUE)
RCAP2H
0FFH
TH2
RCAP2H
TH2
EXF2
RCAP2L
0FFH
TL2
RCAP2L
TL2
OVERFLOW
INTERRUPT
TIMER 2
T2EX PIN
÷
2
"1"
"1"
TIMER 1 OVERFLOW
COUNT
DIRECTION
1=UP
0=DOWN
"0"
"0"
"0"
TOGGLE
"1"
INTERRUPT
TIMER 2
÷
TF2
÷
SMOD1
RCLK
TCLK
16
16
CLOCK
CLOCK
EXF2
Rx
Tx
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