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A1335 Datasheet(PDF) 4 Page - Allegro MicroSystems |
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A1335 Datasheet(HTML) 4 Page - Allegro MicroSystems |
4 / 29 page Precision Hall-Effect Angle Sensor IC with I2C, SPI, and SENT Interfaces A1335 4 Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com DGND BYP DGND NC VCC NC AGND 1 2 3 4 5 6 7 14 13 12 11 10 9 8 DGND SA0/CS SA1/MOSI SCL/SCLK SDA/MISO SENT ISEL DGND_1 BYP_1 AGND_1 NC VCC_1 ISEL_2 SENT_2 SDA_2/MISO_2 SCL_2/SCLK_2 SA1_2/MOSI_2 SA0_2/CS_2 DGND_2 DGND_1 SA0_1/CS_1 SA1_1/MOSI_1 SCL_1/SCLK_1 SDA_1/MISO_1 SENT_1 ISEL_1 VCC_2 NC AGND_2 BYP_2 DGND_2 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 LE-14 Package (Single SoC) LE-24 Package (Dual SoC) Terminal List Table Pin Name1 Pin Number LE-14 LE-24 Function VCC_1 5 5 Device power supply and input for EEPROM writing pulses. Used to enter/exit Manchester Serial Communication mode; serves as programming data input once mode has been entered. VCC_2 – 17 AGND_1 7 3 Device analog ground terminal. AGND_2 – 15 BYP_1 2 2 Internal bypass node, connect with bypass capacitor to DGND (die 1). BYP_2 – 14 Internal bypass node, connect with bypass capacitor to DGND (die 2). DGND_1 1, 3, 14 1, 24 Device digital ground terminal. DGND_2 – 12,13 ISEL_1 8 18 Selects between I2C operation (set to logic low) or SPI operation (set to logic high) (for SENT/Manchester operation set low) (die 1) ISEL_2 – 6 Selects between I2C operation (set to logic low) or SPI operation (set to logic high) (for SENT/Manchester operation set low) (die 2). NC 4, 6 4, 16 Not Connected; connect to GND for optimal ESD performance. SA0_1/ C¯¯S¯_1 13 23 I2C: SA0 digital input. Sets slave address bit 0 (LSB)2; tie to BYP for 1, tie to DGND for 0. SPI: Chip Select input, active low (die 1). Manchester: LSB of the ID value for Die 1. tie to BYP for 1, to DGND for 0. Must be in I2C operation (ISEL set to a logic low). SA0_2/ C¯¯S¯_2 – 11 I2C: SA0 digital input. Sets slave address bit 0 (LSB)2; tie to BYP for 1, tie to DGND for 0. SPI: Chip Select input, active low (die 2). Manchester: LSB of the ID value for Die 2. tie to BYP for 1, to DGND for 0. Must be in I2C operation (ISEL set to a logic low). SA1_1/ MOSI_1 12 22 I2C: SA1 digital input: Sets slave address bit 1 (LSB)2; tie to BYP for 1, tie to DGND for 0. SPI: Master Output/Slave Input terminal (die 1). Manchester: MSB of the ID value for Die 1. tie to BYP for 1, to DGND for 0. Must be in I2C operation (ISEL set to a logic low). SA1_2/ MOSI_2 – 10 I2C: SA1 digital input: Sets slave address bit 1 (LSB)2; tie to BYP for 1, tie to DGND for 0. SPI: Master Output/Slave Input terminal (die 2). Manchester: MSB of the ID value for Die 2. tie to BYP for 1, to DGND for 0. Must be in I2C operation (ISEL set to a logic low). SCL_1/ SCLK_1 11 21 Digital input: Serial clock (I2C: SCL, SPI: SCLK); open drain, pull up externally to 3.3 V (die 1). SCL_2/ SCLK_2 – 9 Digital input: Serial clock (I2C: SCL, SPI: SCLK); open drain, pull up externally to 3.3 V (die 2). SDA_1/ MISO_1 10 20 I2C: Digital data terminal: digital output of evaluated target angle, also programming data input; open drain, pull up externally to 3.3 V (die 1). SPI: Master Input/Slave Output terminal (die 1). SDA_2/ MISO_2 – 8 I2C: Digital data terminal: digital output of evaluated target angle, also programming data input; open drain, pull up externally to 3.3 V (die 2). SPI: Master Input/Slave Output terminal (die 2). SENT_1 9 19 SENT transmission output terminal (die 1); Manchester output in Manchester mode; open drain, pull-up to external supply. SENT_2 – 7 SENT transmission output terminal (die 2); Manchester output in Manchester mode; open drain, pull-up to external supply. 1 The number following the underscore refers to the die number in a dual SOC variant 2 For additional information, refer to the Programming Reference addendum, EEPROM Description and Programming section, regarding the INTF register, I2CM field. |
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