73S1209F-44IM/F Maxim Integrated Products, 73S1209F-44IM/F Datasheet - Page 21

• 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

UG_12xxF_016
The core provides four interrupt priority levels among six group sources. The 73S12xxF sources are
grouped as shown in
The LAPI sets up the four priority levels for these groups as shown in
The low-level APIs are listed below. Additional details are in the subsequent subsections.
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4.2.1 Keyboard Driver API – Available with all 73S12xxF Devices
The Keyboard Driver manages the keystroke acquisition using a scrambled algorithm. It is the High-level
API’s role to manage the scrambling algorithm. Up to 30 keys can be managed in a 6 row by 5 column
configuration. The APIs below are written to use Hardware Scan enabling. An application can be written
to bypass Hardware Scanning to perform its own manual key scan functionality. Refer to the 73S12xxF
Data Sheet for information on the keypad bypass mode.
The Keyboard Driver API includes:
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Rev. 1.50
Keyboard Driver API – Available with all 73S12xxF Devices
LCD Driver API – Available with all 73S12xxF Devices
LED Driver API – Available with all 73S12xxF Devices
Real Time Clock API - Available with the 68-pin 73S12xxF
Smart Card Interface Driver API – Available with all 73S12xxF Devices
SERIAL (RS232) Driver API – Available with all 73S12xxF Devices
USB API – Available with 64K Flash version of the 73S12xxF
Clock Generator Circuit API – Available with all 73S12xxF Devices
Power Management API – Available with all 73S12xxF Devices
Analog Threshold Management Driver API – Available with all 73S12xxF Devices
Event Management API – Available with all 73S12xxF Devices
Timers API – Available with all 73S12xxF Devices
User IO API – Available with all 73S12xxF Devices
External Interrupts API – Available with all 73S12xxF Devices
Special Function Register API – Available with all 73S12xxF Devices
Flash/Memory API – Available with all 73S12xxF Devices
Boot Loader and Passcode Management –
Security Mode Management - Available with the LAPI-*BL.lib
Other Miscellaneous API Calls – Available with all 73S12xxF Devices
KEY_Init ()
KEY_Wait ()
(page 22)
Priorities as set in LAPI.LIB:
(page 22)
Group 6
Highest
Analog
VDD
I2C
Table
3. All sources belonging to a group share the same interrupt priority level.
Table 3: Interrupt Sources and Priority Level
Group 5
Keypad
Serial 0
USB
RTC
Low
Smart Card
Group 4
Timer 1
High
Available with the LAPI-*BL.lib
(page 57).
(page 58).
Group 3
Ext Int 1
Ext Int 3
Lowest
(page 24).
(page 23).
(page 63).
(page 21).
(page 26).
(page 42).
(page 60).
Only (page 69).
(page 55).
(page 52).
Table
Group 2
Ext Int 2
Timer 0
Lowest
(page 51).
(page 39).
(page 61).
(page 71).
73S12xxF Software User Guide
(page 30).
3.
Group 1
Only (page 67).
Ext Int0
Serial 1
Low
(page 53).
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