MAX6956AAX/V+T Maxim Integrated Products, MAX6956AAX/V+T Datasheet
MAX6956AAX/V+T
Specifications of MAX6956AAX/V+T
Related parts for MAX6956AAX/V+T
MAX6956AAX/V+T Summary of contents
Page 1
... Control for Each LED o Logic Transition Detection for Seven I/O Ports PART MAX6956ANI MAX6956AAI+ MAX6956AAX+ MAX6956ATL+ MAX6956AAX/V MAX6956AAX/V+T /V denotes an automotive qualified part. + Denotes a lead(Pb)-free/RoHS-compliant package Tape and reel Exposed pad. Applications TOP VIEW Pin Configurations continued at end of data sheet. Features 2 ...
Page 2
LED Display Driver and I/O Expander ABSOLUTE MAXIMUM RATINGS Voltage (with Respect to GND) V+ .............................................................................-0.3V to +6V SCL, SDA, AD0, AD1................................................-0.3V to +6V All Other Pins................................................-0.3V to (V+ + 0.3V) P4–P31 Current ...
Page 3
LED Display Driver and I/O Expander ELECTRICAL CHARACTERISTICS (continued) ( Typical Operating Circuit , V+ = 2.5V to 5.5V, T PARAMETER SYMBOL Port Drive LED Sink Current, I Port Configured as LED Driver ...
Page 4
LED Display Driver and I/O Expander __________________________________________Typical Operating Characteristics (R = 39kΩ +25°C, unless otherwise noted.) ISET A OPERATING SUPPLY CURRENT vs. TEMPERATURE 0. 2.5V TO 5.5V 0.36 NO ...
Page 5
LED Display Driver and I/O Expander PIN SSO P/D IP SSOP 37, 38 5–24 — — 1–10, 12–19, ...
Page 6
LED Display Driver and I/O Expander Table 1. Port Configuration Map REGISTER Port Configuration for P7, P6, P5, P4 Port Configuration for P11, P10, P9, P8 Port Configuration for P15, P14, P13, P12 ...
Page 7
LED Display Driver and I/O Expander P4 TO P31 LED DRIVERS AND GPIO LED DRIVERS OR GPIO SEGMENT OR GPIO DATA 8 AD0 ADDRESS MATCHER AD1 7-BIT DEVICE ...
Page 8
LED Display Driver and I/O Expander SDA t SU, DAT t LOW SCL t HIGH t HD, STA t R START CONDITION Figure 2. 2-Wire Serial Interface Timing Details SDA S SCL START ...
Page 9
LED Display Driver and I/O Expander START CONDITION SCL SDA BY TRANSMITTER S SDA BY RECEIVER Figure 5. Acknowledge SDA 1 0 MSB SCL Figure 6. Slave Address MAX6956 is the recipient. When ...
Page 10
LED Display Driver and I/O Expander 7-SEGMENT DIGIT 1 VIRTUAL SEGMENTS P10 P11 P12 P13 P14 P15 P16 P17 P18 P19 P20 P21 ...
Page 11
LED Display Driver and I/O Expander HOW COMMAND BYTE AND DATA BYTE MAP INTO MAX6956's REGISTER ACKNOWLEDGE FROM MAX6956 S SLAVE ADDRESS Figure 10. n Data Bytes Received Table 3. MAX6956 Address Map ...
Page 12
LED Display Driver and I/O Expander Table 5. Register Address Map REGISTER No-Op Global Current Configuration Transition Detect Mask Display Test Port Configuration P7, P6, P5, P4 Port Configuration P11, P10, P9, P8 ...
Page 13
LED Display Driver and I/O Expander Table 5. Register Address Map (continued) REGISTER Port 11 only (data bit D0; D7–D1 read as 0) Port 12 only (data bit D0; D7–D1 read as 0) ...
Page 14
LED Display Driver and I/O Expander Table 5. Register Address Map (continued) REGISTER 8 ports 16–23 (data bits D0–D7) 8 ports 17–24 (data bits D0–D7) 8 ports 18–25 (data bits D0–D7) 8 ports ...
Page 15
LED Display Driver and I/O Expander Table 6. Power-Up Configuration REGISTER POWER-UP CONDITION FUNCTION Port Register LED Off; GPIO Output Low Bits Global 1/16 (minimum on) Current Shutdown Enabled Configuration ...
Page 16
LED Display Driver and I/O Expander Table 7. Configuration Register Format ADDRESS CODE FUNCTION (HEX) Configuration Register 0x04 Table 8. Shutdown Control (S Data Bit D0) Format ADDRESS CODE FUNCTION (HEX) Shutdown 0x04 ...
Page 17
LED Display Driver and I/O Expander Table 11. Global Segment Current Register Format LED DRIVE TYPICAL SEGMENT FRACTION CURRENT (mA) 1/16 1.5 2/16 3 3/16 4.5 4/16 6 5/16 7.5 6/16 9 7/16 ...
Page 18
LED Display Driver and I/O Expander Table 12. Individual Segment Current Registers REGISTER ADDRESS FUNCTION CODE (HEX) Current054 register 0x12 Current076 register 0x13 Current098 register 0x14 Current0BA register 0x15 Current0DC register 0x16 Current0FE ...
Page 19
LED Display Driver and I/O Expander Table 14. Odd Individual Segment Current Format SEGMENT LED CONSTANT DRIVE CURRENT WITH FRACTION R = 39kΩ (mA) ISET 1/16 1.5 2/16 3 3/16 4.5 4/16 6 ...
Page 20
LED Display Driver and I/O Expander P31 GPIO INPUT CONDITIONING P30 GPIO/PORT OUTPUT LATCH GPIO INPUT CONDITIONING P29 GPIO/PORT OUTPUT LATCH GPIO INPUT CONDITIONING P28 GPIO/PORT OUTPUT LATCH GPIO INPUT CONDITIONING P27 GPIO/PORT ...
Page 21
LED Display Driver and I/O Expander Table 15. Transition Detection Mask Register REGISTER READ/ FUNCTION ADDRESS WRITE (HEX) Read Mask 0x06 Register Write * INT is automatically cleared after it is read. Table ...
Page 22
LED Display Driver and I/O Expander 3V 47nF DATA CLOCK 3V 47nF IRQ OUT SW1 SW2 SW3 22 ______________________________________________________________________________________ GND P6 ...
Page 23
LED Display Driver and I/O Expander TOP VIEW ISET 1 GND 2 GND 3 AD0 MAX6956 P12 P13 8 P10 9 P14 10 P11 11 P15 12 ...
Page 24
... 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 © 2010 Maxim Integrated Products DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc ...