AT89S53-24PC Atmel, AT89S53-24PC Datasheet - Page 14

• Manufacturer Part Number: AT89S53-24PC
• Description: IC MICRO CTRL 24MHZ 40DIP
• Manufacturer: Atmel
• Series: 89Sr

Specifications of AT89S53-24PC

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 24MHz
• Connectivity: SPI, UART/USART
• Peripherals: WDT
• Number Of I /o: 32
• Program Memory Size: 12KB (12K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 6 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• 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: 4 V to 6 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: No

Figure 5. Timer 2 in Clock-Out Mode
Figure 6. SPI Block Diagram
14
AT89S53
SPI STATUS REGISTER
OSCILLATOR
÷4÷16÷64÷128
SELECT
DIVIDER
SPI CONTROL
SPI INTERRUPT
SPI CLOCK (MASTER)
REQUEST
MSTR
SPE
8
INTERNAL
MSB
DATA BUS
8/16-BIT SHIFT REGISTER
8
READ DATA BUFFER
8
SPI CONTROL REGISTER
CLOCK
LOGIC
LSB
CLOCK
S
M
M
S
S
M
MISO
MOSI
P1.6
P1.5
SCK
P1.4
1.7
SS
0787E–MICRO–3/06