AT89S8253-24AU Atmel, AT89S8253-24AU Datasheet - Page 29

• Manufacturer Part Number: AT89S8253-24AU
• Description: IC MCU 12K FLASH 24MHZ 44-TQFP
• Manufacturer: Atmel
• Series: 89Sr

Specifications of AT89S8253-24AU

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 24MHz
• Connectivity: SPI, UART/USART
• Peripherals: POR, WDT
• Number Of I /o: 32
• Program Memory Size: 12KB (12K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Processor Series: AT89x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: SPI/UART
• Maximum Clock Frequency: 24 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: AT89ISP
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

3286P–MICRO–3/10
Figure 14-5. SPI Slave Timing (CPHA = 0)
Figure 14-6. SPI Master Timing (CPHA = 1)
Figure 14-7. SPI Slave Timing (CPHA = 1)
(CPOL = 0)
(CPOL= 1)
(CPOL = 0)
(CPOL = 1)
(CPOL = 0)
(CPOL = 1)
MISO
MOSI
MISO
MOSI
SCK
SCK
SCK
SCK
MISO
MOSI
SS
SCK
SCK
SS
SS
t
SSE
t
SOE
t
t
SHSL
SLSH
t
SCK
t
t
t
SLSH
SHSL
SR
t
SOV
t
SF
t
SOH
t
SOV
t
SF
t
SIS
t
SR
AT89S8253
t
SIH
t
SSD
t
SOX
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