RESET AND WATCHDOG PINS, SOFTWARE WATCHDOG OPER" />
參數(shù)資料
型號: KIT33989DWEVB
廠商: Freescale Semiconductor
文件頁數(shù): 21/72頁
文件大?。?/td> 0K
描述: KIT EVAL 33989DW HS SBC
標(biāo)準(zhǔn)包裝: 1
主要目的: 接口,CAN 控制器
嵌入式: 是,MCU,8 位
已用 IC / 零件: MC33989
主要屬性: CAN 2.0 系統(tǒng)基礎(chǔ)芯片(SBC),SPI 接口,2 低壓降穩(wěn)壓器
次要屬性: 故障檢測,睡眠和待機模式
已供物品: 板,CD
相關(guān)產(chǎn)品: MC33989DWR2CT-ND - IC SYSTEM BASE W/CAN 28-SOIC
MC33989DWR2TR-ND - IC SYSTEM BASE W/CAN 28-SOIC
MC33989DW-ND - IC SYSTEM BASE W/CAN 28-SOIC
Analog Integrated Circuit Device Data
28
Freescale Semiconductor
33989
FUNCTIONAL DEVICE OPERATION
RESET AND WATCHDOG PINS, SOFTWARE WATCHDOG OPERATIONS
Figure 13. State Machine (Not Valid in Debug Modes)
Notes These two SPI commands must be sent consecutively in this sequence.
30.
If WD activated.
Power
Down
Reset
Normal
Stand-by
Stop
Normal
Sleep
Reset Counter (3.4
ms) Expired
SB
C
Power-
VDD1 Low OR WD:
Timeout 350 ms
&!Nostop
1
Wa
ke
-u
p
SPI: Stand-by
& WD Trigger
3
S
P
I:
S
ta
nd-b
y
SP
I:
N
o
rm
a
l
SPI: Stop & CS
Low to High
Transition
SPI:
St
op
&
CS
Low
to
Hi
gh
Tr
ansi
tio
n
WD
: T
rig
ger
4
2
WD: Timeout OR VDD1 Low
Nos
top
&
SP
I:
Slee
p
&
CS
Lo
w
Nost
op
&
SPI
:Slee
p
&
CS
L
o
w
to
High
WD:
Timeout
&
Nostop
1
WD: Timeout OR VDD1 Low
1
2
W
D:
Tim
eo
ut O
R
V
DD
1 Lo
w (3
1
Wake-up
(VDD1 High Temperature OR (VDD11 Low > 100ms & VSUP >BFew)) & Nostop &!BATFAIL
1
2
3
4 denotes priority
STATE MACHINE DESCRIPTION:
30.
Nostop = Nostop bit = 1
31.
! Nostop = Nostop bit = 0
32.
BATFAIL = Batfail bit = 1
33.
! BATFAIL = Batfail bit = 0
34.
VDD1 Over Temperature = VDD1 thermal shutdown occurs
35.
VDD1 low = VDD1 below reset threshold
36.
VDD1 low >100 ms = VDD1 below reset threshold for more than 100 ms
37.
WD: Trigger = TIM1 register write operation.
38.
VSUP > BFew = VSUP > Battery Fall Early Warning (6.1 V typical)
39.
WD: Timeout = TIM1 register not written before WD timeout period expired, or WD written in incorrect time window if window WD
selected (except stop mode). In Normal Request mode timeout is 355 ms p2.2 (350 ms p3) ms.
40.
SPI: Sleep = SPI write command to MCR register, data sleep
41.
SPI: Stop = SPI write command to MCR register, data stop
42.
SPI: Normal = SPI write command to MCR register, data normal
43.
SPI: Stand-by = SPI write command to MCR register, data stand-by
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