MAX7317AEE+ Maxim Integrated Products, MAX7317AEE+ Datasheet
MAX7317AEE+
Specifications of MAX7317AEE+
Related parts for MAX7317AEE+
MAX7317AEE+ Summary of contents
Page 1
... DIN DOUT MISO CS CS GND ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. ♦ High-Speed, 26MHz SPI™-/QSPI-™/MICROWIRE™- Compatible Serial Interface ♦ 2.25V to 3.6V Operation ♦ ...
Page 2
SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection ABSOLUTE MAXIMUM RATINGS Voltage (with respect to GND) V+ .............................................................................-0.3V to +4V SCLK, DIN, CS, DOUT .................................-0.3V to (V+ + 0.3V) P_ .............................................................................-0.3V to +8V DC Current into P_ .............................................................24mA DC ...
Page 3
SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection TIMING CHARACTERISTICS (Typical Operating Circuit 2.25V to 3.6V, T (Note 1) PARAMETER SYMBOL SCLK Clock Period SCLK Pulse-Width High t SCLK Pulse-Width Low CS Fall to SCLK Rise Setup ...
Page 4
SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection (T = +25°C, unless otherwise noted.) A PORT SINK CURRENT vs. PORT VOLTAGE -40° +25° +85° +125°C ...
Page 5
SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection Detailed Description The MAX7317 is a general-purpose input/output (GPIO) peripheral that provides 10 I/O ports P9, con- trolled through a high-speed SPI-compatible serial interface. The 10 I/O ports can ...
Page 6
SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection Table 1. Register Address Map REGISTER Port P0 output level Port P1 output level Port P2 output level Port P3 output level Port P4 output level Port P5 output level Port ...
Page 7
SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection Connecting Multiple MAX7317s to the 4-Wire Bus Multiple MAX7317s can be interfaced to a common SPI bus by connecting DIN inputs together, SCLK inputs Table 3. Input Ports Register REGISTER Read ...
Page 8
SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection Alternatively, MAX7317s can be daisy-chained by con- necting the DOUT of one device to the DIN of the next, and driving SCLK and CS lines in parallel (Figure 3). This connection ...
Page 9
SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection MOSI CS SCLK µC MISO Figure 3. MAX7317 Daisy-Chain Connection CS t CSS SCLK t DS DIN D15 DOUT Figure 4. Timing Diagram CS SCLK D15 DIN D14 D13 D12 = ...
Page 10
SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection CS SCLK BIT BIT DIN N-15 N-14 N- DOUT N-31 N-30 N-29 Figure 6. Transmission of More than 16 Bits to the MAX7317 Applications Information The I/O ports P0–P9 ...
Page 11
SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) ______________________________________________________________________________________ Package Information PACKAGE OUTLINE, QSOP .150", .025" ...
Page 12
... 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. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2005 Maxim Integrated Products Package Information (continued) ...