AT89S8252-24PI Atmel, AT89S8252-24PI Datasheet - Page 28

• Manufacturer Part Number: AT89S8252-24PI
• Description: MCU W/SPI 8KB FLSH 2K EEP 40-DIP
• Manufacturer: Atmel
• Series: 89Sr

Specifications of AT89S8252-24PI

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 24MHz
• Connectivity: SPI, UART/USART
• Peripherals: POR, WDT
• Number Of I /o: 32
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 6 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
• Data Converters: -
• Other names: AT89S825224PI

Figure 13. Programming the Flash/EEPROM Memory
Figure 14. Verifying the Flash/EEPROM Memory
28
PROGRAMMING
MODES TABLE
3-24 Mhz
SEE FLASH
PROGRAMMING
3-24 MHz
MODES TABLE
SEE FLASH
0000H/2FFFH
0000H/27FFH
ADDR.
ADDR.
AT89S8252
A8 - A13
A0 - A7
A8 - A13
A0 - A7
P1
P2.0 - P2.5
P2.6
P2.7
P3.6
P3.7
XTAL2
XTAL1
GND
P1
P2.0 - P2.5
P2.6
P2.7
P3.6
P3.7
XTAL2
XTAL1
GND
AT89S8252
AT89S8252
PSEN
PSEN
RST
ALE
P3.4
RST
ALE
V
V
EA
P0
EA
P0
CC
CC
+5V
PGM DATA
(USE 10K
PULLUPS)
+5V
V
V
V
PGM
DATA
PROG
V
RDY/
BSY
V
I H
PP
I H
PP
IH
Figure 15. Flash/EEPROM Serial Downloading
3-24 MHz
DATA OUTPUT
INSTRUCTION
CLOCK IN
INPUT
P1.5/MOSI
P1.6/MISO
P1.7/SCK
XTAL2
XTAL1
GND
AT89S52
RST
V
CC
0401G–MICRO–3/06
+4.0V to 6.0V
V
IH