73S1209F-44IM/F Maxim Integrated Products, 73S1209F-44IM/F Datasheet - Page 60

• Manufacturer Part Number: 73S1209F-44IM/F
• Description: IC SMART CARD READER 44-QFN
• Manufacturer: Maxim Integrated Products

Specifications of 73S1209F-44IM/F

• Core Processor: 80515
• Core Size: 8-Bit
• Speed: 24MHz
• Connectivity: I²C, SmartCard, UART/USART
• Peripherals: LED, POR, WDT
• Number Of I /o: 9
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

73S12xxF Software User Guide
USER_IO_Config()
USER_IO_Read()
USER_IO_Write()
4.2.14 External Interrupts API – Available with all 73S12xxF Devices
This API allows direct access to the two external interrupt pins (EXT3 and EXT2). These two interrupts
are only available as edge (falling/negative or rising/positive) sensitive. The API includes:
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INT2_Config()
60
Purpose
Synopsis
Parameters
Return Codes None.
Purpose
Synopsis
Parameters
Return Codes None.
Purpose
Synopsis
Parameters
Return Codes None.
INT2_Config()
INT2_Read()
INT3_Config()
INT3_Read()
Purpose
Synopsis
(page 61)
(page 61)
(page 60)
(page 61)
Configure the direction for the USER IO pins.
void USER_IO_ Config ( Unsigned char usrsrc, Unsigned char dir )
usrsrc: Input parameter
Corresponding USR pins to be configured as Input or Output. USRIO 0 through 7
will be configured according to the Dir parameter below.
Dir: Input parameter
Direction value (1=input, 0=output) for the selected pins.
Read the value of the USER IO pins.
void USER_IO_Read ( OUT char *user_dir, OUT char *user_data );
User_dir: Output parameter
Direction value (1=input, 0=output) for the selected pins.
User_data: Output parameter
Value of the corresponding USER IO pins. All outputs will reflect the last value
written.
Write values to selected USER IO pins.
Void USER_IO_Write ( IN char cUserIO, IN char cUserIOselect );
cUserIO: Input parameter
Values to write to selected USER IO pins.
cUserIOselect: Input parameter
configured as an output.
Configure External Interrupt 2.
void INT2_Config ( Unsigned char Enable, Unsigned char Polarity );
A ‘1’ in the corresponding bit will enable writing to that USR pin provided it is
UG_12xxF_016
Rev. 1.50