MAX6947ATE+T Maxim Integrated Products, MAX6947ATE+T Datasheet
MAX6947ATE+T
Specifications of MAX6947ATE+T
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MAX6947ATE+T Summary of contents
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... SMBus is a trademark of Intel Corp. SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. ♦ 2.25V to 3.6V Operation ...
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Constant-Current LED Driver and I/O Expander with PWM Intensity Control ABSOLUTE MAXIMUM RATINGS VDD to GND .............................................................-0.3V to +4V RST, OSC to GND .........................-0.3V to +6V SCL, SDA, AD0 GND .......................................................-0.3V to +8V DC Current ...
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Constant-Current LED Driver and I/O Expander with PWM Intensity Control ELECTRICAL CHARACTERISTICS (continued 2.25V to 3.6V MIN MAX PARAMETER Input High Voltage (P0–P9, SDA, SCL, RST, AD0, OSC) Input Low ...
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Constant-Current LED Driver and I/O Expander with PWM Intensity Control TIMING CHARACTERISTICS (Figure 2.25V to 3.6V MIN MAX PARAMETER Internal PWM Clock Frequency External PWM Clock Frequency Serial-Clock Frequency ...
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Constant-Current LED Driver and I/O Expander with PWM Intensity Control (T = +25°C, unless otherwise noted.) A STANDBY CURRENT (I ) STBY vs. TEMPERATURE 2 3. 2.7V DD ...
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Constant-Current LED Driver and I/O Expander with PWM Intensity Control PIN MAX6946/ MAX6946C MAX6947 OSC (MAX6946) 12 ...
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Constant-Current LED Driver and I/O Expander with PWM Intensity Control Detailed Description The MAX6946/MAX6947 general-purpose input/output (GPIO) peripherals provide 10 I/O ports P9, con- 2 trolled through an I C-compatible serial interface. Use the 10 I/O ports ...
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Constant-Current LED Driver and I/O Expander with PWM Intensity Control Configuration Register (0x10) Use the configuration register to select PWM phasing between outputs, test fade status, enable hardware startup from shutdown, and select shutdown or run mode (Table 2). ...
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Constant-Current LED Driver and I/O Expander with PWM Intensity Control The MAX6946/MAX6947 contain 10 I/O ports. Configure the 10 I/O ports as logic inputs, open-drain logic outputs, or constant-current sinks in any combina- tion. Table 4 shows a detailed ...
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Constant-Current LED Driver and I/O Expander with PWM Intensity Control Ports Configured as Outputs The global-current register sets the full (maximum) con- stant-current sink into an I/O port configured as an out- put (Table 5). Each output port’s individual ...
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Constant-Current LED Driver and I/O Expander with PWM Intensity Control PWM Intensity Control and Phasing The MAX6946/MAX6947 use an internal 32kHz oscilla- tor to generate PWM timing for LED intensity control. The MAX6946 also features an OSC input to ...
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Constant-Current LED Driver and I/O Expander with PWM Intensity Control Ports Configured as Inputs Configure a port as a logic input by writing 0x01 to the port’s output register (Table 4). Reading an input port register returns the logic ...
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Constant-Current LED Driver and I/O Expander with PWM Intensity Control In shutdown mode, all ports configured as constant- current outputs (output register set to a value between 0x02 and 0xFE) are switched off, and these outputs go high impedance ...
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Constant-Current LED Driver and I/O Expander with PWM Intensity Control PORT CURRENT = FULL CURRENT 20mA 17.5mA 15mA 12.5mA PORT CURRENT = HALF 10mA 7.5mA 5mA 2.5mA 0mA FULL 7/8 6/8 5/8 4/8 CURRENT CURRENT CURRENT CURRENT CURRENT CURRENT ...
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Constant-Current LED Driver and I/O Expander with PWM Intensity Control Table 9. Ramp-Up Register Format (0x12) DESCRIPTION Instant full current coming out from shutdown 1/16s ramp-up to full current coming out from shutdown 1/8s ramp-up to full current coming ...
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Constant-Current LED Driver and I/O Expander with PWM Intensity Control and requires sending at least the MAX6946/MAX6947s’ slave address. When using the internal oscillator, the minimum timeout period is 127/45000 equal to 2.822ms. When using an ...
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Constant-Current LED Driver and I/O Expander with PWM Intensity Control Table 10. MAX6946/MAX6947 Slave Addresses MAX6947 SLAVE ADDRESS AD0 = GND AD0 = V DD MAX6946 Start and Stop Conditions Both SCL and SDA remain high when the interface ...
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Constant-Current LED Driver and I/O Expander with PWM Intensity Control COMMAND BYTE IS STORED ON RECEIPT OF ACKNOWLEDGE FROM MAX6946/MAX6947 S SLAVE ADDRESS Figure 12. Command Byte Received HOW COMMAND BYTE AND DATA BYTE MAP INTO MAX6946/MAX6947s' REGISTERS ACKNOWLEDGE ...
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Constant-Current LED Driver and I/O Expander with PWM Intensity Control The RST, SCL, and AD0 inputs and SDA remain high impedance with up to +6V asserted on them when the MAX6946/MAX6947 power down ( remain high ...
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Constant-Current LED Driver and I/O Expander with PWM Intensity Control Using Stagger with Fewer Ports The stagger option, when selected, applies to all ports configured as constant-current outputs. The 10 ports’ PWM cycles are separated to eight evenly spaced ...
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Constant-Current LED Driver and I/O Expander with PWM Intensity Control (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) E MARKING E/2 AAAA D/2 D ...
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Constant-Current LED Driver and I/O Expander with PWM Intensity Control (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) PKG 8L 3x3 12L 3x3 REF. ...
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Constant-Current LED Driver and I/O Expander with PWM Intensity Control (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ Package Information (continued) 23 ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 24 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2008 Maxim Integrated Products Heaney DESCRIPTION is a registered trademark of Maxim Integrated Products, Inc ...