AT89S52-24PI Atmel, AT89S52-24PI Datasheet - Page 31

• Manufacturer Part Number: AT89S52-24PI
• Description: IC MCU 8K FLASH 24MHZ 40-DIP
• Manufacturer: Atmel
• Series: 89Sr

Specifications of AT89S52-24PI

• 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: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

29. External Program Memory Read Cycle
30. External Data Memory Read Cycle
1919D–MICRO–6/08
PORT 0
PORT 2
PORT 0
PORT 2
PSEN
PSEN
ALE
ALE
RD
A0 - A7 FROM RI OR DPL
t
LHLL
t
AVLL
t
AVLL
t
P2.0 - P2.7 OR A8 - A15 FROM DPH
LHLL
t
AVWL
t
LLAX
t
A0 - A7
AVDV
t
LLAX
t
LLWL
t
t
RLAZ
LLPL
t
t
LLDV
AVIV
A8 - A15
t
PLAZ
t
RLRH
t
RLDV
DATA IN
t
t
LLIV
PLIV
INSTR IN
t
PXIX
t
PXIZ
t
t
t
A0 - A7 FROM PCL
RHDZ
t
PLPH
PXAV
t
RHDX
WHLH
A8 - A15 FROM PCH
A8 - A15
A0 - A7
INSTR IN
AT89S52
31