MAX3421EETJ+T Maxim Integrated Products, MAX3421EETJ+T Datasheet - Page 6

• Manufacturer Part Number: MAX3421EETJ+T
• Description: IC USB PERIPH/HOST CNTRL 32TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX3421EETJ+T

• Controller Type: USB Peripheral Controller
• Interface: USB/Serial
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 15mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-TQFN Exposed Pad
• For Use With: MAX3421EVKIT-1+ - EVAL KIT FOR MAX3421E
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

USB Peripheral/Host Controller
with SPI Interface
6
PIN
_______________________________________________________________________________________
21
22
23
24
25
26
27
28
29
30
31
32
EP
VBCOMP
NAME
GPIN0
GPIN1
GPIN2
GPIN3
GPIN4
GPIN5
GPIN6
GND
V
D+
XO
XI
CC
OUTPUT
INPUT/
Output
Output
Input/
Input
Input
Input
Input
Input
USB D+ Signal. Connect D+ to a USB connector through a 33Ω ±1% series resistor. A
switchable 1.5kΩ D+ pullup resistor and 15kΩ D+ pulldown resistor is internal to the device.
V
SPI master to detect (through an interrupt or checking a register bit) the presence or loss of
power on V
down to ground with R
U S B Tr anscei ver and Log i c C or e P ow er - S up p l y Inp ut. C onnect V
sup p l y. Byp ass V
Crystal Oscillator Input. Connect XI to one side of a parallel resonant 12MHz ±0.25% crystal
and a load capacitor to GND. XI can also be driven by an external clock referenced to V
C r ystal Osci l l ator O utp ut. C onnect X O to the other si d e of a p ar al l el r esonant 12M H z ± 0.25% cr ystal
and a l oad cap aci tor to GN D . Leave X O unconnected i f X I i s d r i ven w i th an exter nal sour ce.
General-Purpose Inputs. GPIN7–GPIN0 are connected to V
GPIN7–GPIN0 logic levels are referenced to the voltage on V
E xp osed P ad d l e, C onnected to Gr ound . C onnect E P to GN D or l eave unconnected . E P i s l ocated
on the b ottom of the TQFN p ackag e. The TQ FP p ackag e d oes not have an exp osed p ad d l e.
BUS
Comparator Input. VBCOMP is internally connected to a voltage comparator to allow the
BUS
. Bypass VBCOMP to ground with a 1.0µF ceramic capacitor. VBCOMP is pulled
C C
to g r ound w i th a 1.0µF cer am i c cap aci tor as cl ose to the V
IN
(see Electrical Characteristics).
FUNCTION
Pin Description (continued)
L
with internal pullup resistors.
L
.
C C
to a p osi ti ve 3.3V p ow er
C C
p i n as p ossi b l e.
CC
.