參數(shù)資料
型號(hào)： MC33689DDWB
廠商： Freescale Semiconductor
文件頁數(shù)： 15/31頁
文件大?。?/td> 0K
描述： IC SYSTEM BASE W/LIN 32-SOIC
標(biāo)準(zhǔn)包裝： 42
應(yīng)用： 自動(dòng)鏡像控制
接口： SPI
電源電壓： 5.5 V ~ 18 V
封裝/外殼： 32-SOIC（0.295"，7.50mm 寬）
供應(yīng)商設(shè)備封裝： 32-SOIC
包裝： 管件
安裝類型： 表面貼裝
配用： KIT33689DWBEVB-ND - KIT FOR 33689 SBC WITH LIN
Analog Integrated Circuit Device Data
22
Freescale Semiconductor
33689
FUNCTIONAL DESCRIPTION
FUNCTIONAL DEVICE OPERATION
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
As described below and depicted in Figure 1 below and
Table 1 on page 23, the 33689 has three operational modes:
Normal, Sleep, and Stop. Operational modes are controlled
by MODE1 and MODE2 bits in the SPI Register (refer to
there are two transitional modes: Reset and Normal Request.
RESET MODE
At power up, the 33689 switches automatically to Reset
Mode for 1 ms if VDD goes high. If VDD stays low, after
150 ms the 33689 goes in Sleep Mode.
NORMAL REQUEST MODE
Before entering in Normal Request Mode, the 33689 stays
for 1 ms in Reset Mode. In this mode, the LIN bus can
transmit and receive information.
Figure 1. 33689 Modes State Diagram
Power
Reset
Stop
Normal
Sleep
VDD HIGH & Reset Counter (1.0 ms)
Expired & Watchdog Selected
33689
Power
-Up
VDD LOW OR
(Normal Request
Timeout Occurs
[150 ms] & Watchdog
Selected)
Wake-
U
p
&
W
a
tc
h-
dog
S
e
lected
Stop
Comman
d
Sleep
Command
Wake-Up
VDD LOW
W
a
tchdog
T
rigger
VDD HIGH & Reset Counter (1.0 ms) Expired & Watchdog Not Selected
VDD LOW OR (Watchdog
Fail & Watchdog Selected)
Legend
Watchdog Selected: External resistor between WDC pin and GND or WDC pin open.
Watchdog Not Selected: WDC pin connected to GND.
Watchdog Fail: Watchdog trigger occurs in closed window or no SPI Watchdog trigger command.
Stop Command: SPI stop command.
Sleep Command: SPI sleep request followed by SPI sleep command.
Wake-Up: L1 or L2 state change or LIN bus wake-up or CS rising edge.
VDD LOW (150 ms) Expired & VSUV Bit = Logic [0]
Wak
e
-U
p
&
W
a
tchdog
Not
Selec
ted
Down
Normal
Request
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