MAX3420EECJ-T Maxim Integrated, MAX3420EECJ-T Datasheet
MAX3420EECJ-T
Specifications of MAX3420EECJ-T
Related parts for MAX3420EECJ-T
MAX3420EECJ-T Summary of contents
Page 1
... Instrumentation Ordering Information PART TEMP RANGE MAX3420EETG+ -40°C to +85°C MAX3420EECJ+ -40°C to +85°C MAX3420EECJ/V+ -40°C to +85°C +Denotes a lead(Pb)-free/RoHS-compliant package Exposed pad. /V denotes an automotive qualified part. Pin Configurations appear at end of data sheet. Functional Diagrams continued at end of data sheet. SPI is a trademark of Motorola, Inc. ...
Page 2
... INT O MICRO L at any frequency up to 26MHz. Therefore, the designer A ASIC is free to choose the interface operating frequency and T DSP to make opto-isolator choices optimized for cost or per- O SCLK R formance. MOSI S SS LOCAL GND pin and internal level translators allow Maxim Integrated ...
Page 3
... V CC 1.5kΩ D+ ESD PROTECTION D- ESD VBCOMP PROTECTION MAX3420E GND Maxim Integrated USB Peripheral Controller with SPI Interface V RES L INTERNAL RESET LOGIC FULL-SPEED USB TRANSCEIVER ENDPOINT BUFFERS VBUS_DET VBUS COMP GPIN VBUS_DET OPERATE BUSACT SOF MUX GPX GPIN3 ...
Page 4
... The SPI master controls the GPOUT3–GPOUT0 L to the system’s 1.71V to 3. ground with a 0.1μF capacitor as close L . The SPI master controls the GPOUT3–GPOUT0 not present. The register file is not MOSI can also be configured as a bidirectional ±1% series ±1% series Maxim Integrated ...
Page 5
... Figure 4. SPI Command Byte b7 b6 SUSPIRQ URESIRQ SUDAVIRQ Figure 5. USB Status Bits Clocked Out as First Byte of Every Transfer (Full-Duplex Mode Only) Maxim Integrated USB Peripheral Controller INPUT/ OUTPUT USB Transceiver Power-Supply Input. Connect V supply. Bypass V to ground with a 1.0μF ceramic capacitor as close to the ...
Page 6
... TLE P 0IN 0BAV OKIE Maxim Integrated ...
Page 7
... GPIN0 21 MAX3420E GPIN1 22 GPIN2 23 *EP GPIN3 TQFN *CONNECT EXPOSED PAD TO GND. Maxim Integrated USB Peripheral Controller TOP VIEW GPX 11 MOSI 10 MISO 9 SS GPIN0 8 SCLK GPIN1 7 RES GPIN2 GPIN3 5 6 MAX3420E with SPI Interface Pin Configurations ...
Page 8
... LOAD ≥ 2. -20mA, V LOAD GPIN | +70° +3.3V UNITS MIN TYP MAX 3.0 3.3 3.6 V 1. 100 µ µ 0. 0.4 L 0.6 V 0 µ kΩ 0.2 V 0.8 2.5 V Maxim Integrated ...
Page 9
... XI Input High Voltage XI Input Low Voltage XI Input Current XI, XO Input Capacitance VBCOMP COMPARATOR SPECIFICATIONS VBCOMP Comparator Threshold VBCOMP Comparator Hysteresis VBCOMP Comparator Input Impedance Maxim Integrated USB Peripheral Controller = unless otherwise noted. Typical values are MIN MAX SYMBOL CONDITIONS ...
Page 10
... PWRDOWN = OSCOKIRQ (Note 5) = +25°C, and guaranteed by correlation over temperature +3.3V MIN MIN TYP TYP MAX MAX UNITS UNITS 110 % 1.3 2.0 V 77 200 ns 14.2 ns 14 µ Maxim Integrated ...
Page 11
... FOR SPI READ CYCLES, AFTER THE 8TH CLOCK-RISING EDGE, THE MAX3420E STARTS DRIVING THE MOSI PIN AFTER TIME t OFF ITS DRIVER TO THE MOSI PIN BEFORE t Figure 9. SPI Bus Timing Diagram (Half-Duplex Mode, SPI Mode (0,0)) Maxim Integrated USB Peripheral Controller Test Circuits and Timing Diagrams ...
Page 12
... SPI master can detect the loss of V (through an interrupt (INT) or checking a bit BUS Bypass V to GND with a 1.0µ pin as possible. CC allow the SPI interface and all general-pur- VBCOMP detector input, BUS Maxim Integrated the L ...
Page 13
... XO unconnected. The external clock must meet the voltage characteristics depicted in the Electrical Characteristics table. Internal logic is single- edge triggered. The external clock should have a nomi- nal 50% duty cycle. Maxim Integrated USB Peripheral Controller with SPI Interface PULLUP SINGLE Not Connected ...
Page 14
... The SPI data pins MOSI and MISO operate differently depending on the setting of a register bit called FDUPSPI (full-duplex SPI). Figure 13 shows the two configurations according to the FDUPSPI bit setting. GPOUT PIN FULL-SPEED TIME FRAME 1ms SOF MOSI MISO MAX3420E MOSI MISO MAX3420E Maxim Integrated ...
Page 15
... The inactive level of SCLK may be low or high, depending on the SPI operating mode (Figure 14). The MAX3420E SPI interface is active only when SS is low. When SS is high, the MAX3420E tri-states the SPI output pin and resets the internal MAX3420E SPI logic. Maxim Integrated USB Peripheral Controller SPI MODE 0 ...
Page 16
... SS low and placing the first data bit (MSB) to write on the MOSI input. the command byte into the MAX3420E on the rising edges of the SCLK it supplies. The SPI master changes its MOSI data on the falling edges of SCLK. high to deselect the MAX3420E. Maxim Integrated ...
Page 17
... When repowered, the oscillator and PLL require time to stabilize and lock. The OSCOKIRQ interrupt bit is used to indicate to the SPI master that the clocking system is stable and ready for operation. Maxim Integrated USB Peripheral Controller SPI MODE 0,0 (CPOL = 0, CPHA = 0) SUDAVIRQ ...
Page 18
... The exceptions are the interrupts associat- ed with the actual bus reset, allowing the SPI master to detect the beginning and end of the host signaling USB bus reset. Chip Reset USB Bus Reset Maxim Integrated ...
Page 19
... BUS voltage-detection input, VBCOMP, makes an excellent general-purpose input when pulled VBCOMP input has two interrupts associated with it, VBUSIRQ and NOVBUSIRQ. These interrupts can detect both edges of any transitions on the VBCOMP input. Maxim Integrated USB Peripheral Controller 3.3V REGULATOR MAX6349TL 1.0μF 0.1μF CERAMIC 10kΩ ...
Page 20
... For typical C tance can be greater than factor of 2. +3.3V 12MHz GPX INT N.C. MOSI N.C. MISO SCLK SS GPIN GPOUT 4 4 GPIO Crystal Selection : 18pF LOAD and C values, the effective resis- O LOAD μP 2 Maxim Integrated ...
Page 21
... ESD structures withstand high ESD in all operating modes: normal operation, suspend mode, and pow- ered down. VBCOMP and V CC capacitors connected to ground as close to the pins as Maxim Integrated USB Peripheral Controller possible. D+, D-, and VBCOMP provide protection to the following limits: • ±15kV using the Human Body Model • ...
Page 22
... Added the MAX3420EECJ/V+ part number to the Ordering Information 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. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed ...