AT85C5122D-SISUM Atmel, AT85C5122D-SISUM Datasheet - Page 161
AT85C5122D-SISUM
Manufacturer Part Number
AT85C5122D-SISUM
Description
RFID Modules & Development Tools 3-5.5V Smart Card Reader
Manufacturer
Atmel
Datasheet
1.AT85C5122D-SISUM.pdf
(213 pages)
Specifications of AT85C5122D-SISUM
Product
RFID Readers
- Current page: 161 of 213
- Download datasheet (3Mb)
INT1 Interrupt Vector
INT1 Input
RXD Input
CPRES Input
4202E–SCR–06/06
The INT1 interrupt is multiplexed with the following three inputs:
•
•
•
The setting configurations for each input is detailed below.
This interrupt input is active under the following conditions :
•
•
•
The Bit IE1 (TCON Register) is set by hardware when external interrupt detected. It is
cleared when interrupt is processed.
A second vector interrupt input is the reception of a character. UART Rx input can gen-
erate an interrupt if enabled with Bit RXEN (ISEL.0). The global enable bits EX1 and EA
must also be set.
Then, the Bit RXIT (ISEL Register) is set by hardware when a low level is detected on
P3.0/RXD input.
The third input is the detection of a level change on CPRES input (P1.2). This input can
generate an interrupt if enabled with PRESEN (ISEL.1) , EX1 (IE0.2) and EA (IE0.7)
Bits.
This detection is done according to the level selected with Bit CPLEV (ISEL.7).
Then the Bit PRESIT (ISEL.5) is set by hardware when the triggering conditions are
met. This Bit must be cleared by software.
INT1 : Standard 8051 interrupt input
RXD : Received data on UART
CPRES: Insertion or remove of the main card
It must be enabled by OEEN Bit (ISEL Register)
It can be active on a level or falling edge following IT1 Bit (TCON Register) status
If level triggering selection is set, the active level 0 or 1 can be selected with OELEV
Bit (ISEL Register)
AT8xC5122/23
161
Related parts for AT85C5122D-SISUM
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
8-bit Microcontrollers - MCU RAM Indus
Manufacturer:
Atmel
Part Number:
Description:
DEV KIT FOR AVR/AVR32
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
High-performance EE PLD
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
8-bit Flash Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
2-Wire Serial EEPROM
Manufacturer:
ATMEL Corporation
Datasheet: