参数资料
型号: MAX3420EECJ+T
厂商: Maxim Integrated Products
文件页数: 3/22页
文件大小: 0K
描述: IC USB PERIPH CONTROLLER 32TQFP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,000
控制器类型: USB 外设控制器
接口: USB/串行
电源电压: 3 V ~ 3.6 V
电流 - 电源: 15mA
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 32-LQFP
供应商设备封装: 32-LQFP(7x7)
包装: 带卷 (TR)
配用: MAX3420EEVKIT-2+-ND - EVAL KIT FOR MAX3420E
USB Peripheral Controller
with SPI Interface
Test Circuits and Timing Diagrams
Figure 6. Rise and Fall Times
VOL
VOH
tRISE
tFALL
90%
10%
Figure 7. Load for D+/D- AC Measurements
MAX3420E
D+ OR D-
TEST
POINT
33
Ω
15k
Ω
CL
SCLK
SS
MOSI
MISO
tDS
tDH
tCL
tDO
tCH
tT
HIGH
IMPEDANCE
8
1
2
9
10
16
tL
tCSS
tCSW
tCP
HIGH
IMPEDANCE
Figure 9. SPI Bus Timing Diagram (Half-Duplex Mode, SPI Mode (0,0))
SCLK
MOSI
MISO
NOTES:
1) DURING THE FIRST 8 CLOCKS CYCLES, THE MOSI PIN IS HIGH IMPEDANCE AND THE SPI MASTER DRIVES DATA ONTO THE MOSI PIN. SETUP AND HOLD TIMES ARE THE SAME AS
FOR FULL-DUPLEX MODE.
2) FOR SPI WRITE CYCLES, THE MOSI PIN CONTINUES TO BE HIGH IMPEDANCE AND THE EXTERNAL MASTER CONTINUES TO DRIVE MOSI.
3) FOR SPI READ CYCLES, AFTER THE 8TH CLOCK-RISING EDGE, THE MAX3420E STARTS DRIVING THE MOSI PIN AFTER TIME tON. THE EXTERNAL MASTER MUST TURN
OFF ITS DRIVER TO THE MOSI PIN BEFORE tON TO AVOID CONTENTION. PROPAGATION DELAYS ARE THE SAME AS FOR THE MOSI PIN IN FULL-DUPLEX MODE.
tDS
tDH
tCL
tCH
tDI
tOFF
tT
SS
HI-Z
8
1
2
9
10
16
tL
tCSW
tON
tCP
HIGH IMPEDANCE
Figure 8. SPI Bus Timing Diagram (Full-Duplex Mode, SPI Mode (0,0))
MAX3420E
11
Maxim Integrated
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