參數(shù)資料
型號: MC33989
廠商: 飛思卡爾半導體(中國)有限公司
元件分類: CAN
英文描述: System Basis Chip with High Speed CAN Transceiver(帶高速CAN收發(fā)器的系統(tǒng)基片)
中文描述: 系統(tǒng)基礎芯片的高速CAN收發(fā)器(帶高速的CAN收發(fā)器的系統(tǒng)基片)
文件頁數(shù): 19/32頁
文件大小: 676K
代理商: MC33989
MC33989
19
MC33989
6
STATE MACHINE
State machine (not valid in debug modes)
Power
Down
Reset
Normal Request
Standby
Stop
Normal
Sleep
Reset
(3.4ms) expired
counter
S
1
W
SPI: standby &
W/D
(note1)
3
trigger
S
S
SPI: Stop & CSB
low
to
transition
high
tohghtanston
WD Tigge
4
2
W/D: timeout OR Vdd1 low
N
&
S
s
t
N
C
W/D: timeout & Nostop & !BATFAIL
1
W/D: timeout OR Vdd1 low
1
2
WD imeou ORVdd1low(noe2
1
Wake up
(Vdd1 high temperature OR (Vdd1 low > 100ms & Vsup >BFew)) & Nostop & !BATFAIL
1
State machine description:
2
3
4
denotes priority
“Nostop” means Nostop bit = 1
“! Nostop” means Nostop bit = 0
“BATFAIL” means Batfail bit = 1
“! BATFAIL” means Batfail bit = 0
“Vdd1 over temperature” means Vdd1 thermal shutdown occurs
“Vdd1 low” means Vdd1 below reset threshold
“Vdd1 low > 100ms” means Vdd1 below reset threshold for more than
100ms
“W/D: Trigger” means TIM1 register write operation.
Vsup>BFew means Vsup > Battery Fall Early Warning (6.1V typical)
“W/D: time out” means TIM1 register not written before W/D time out
period expired, or W/D written in incorrect time window if window W/D selected
(except stop mode). In normal request mode time out is 355ms p2.2 (350ms
p3)ms.
“SPI: Sleep” means SPI write command to MCR register, data sleep
“SPI: Stop” means SPI write command to MCR register, data stop
“SPI: Normal” means SPI write command to MCR register, data normal
“SPI: Standby” means SPI write command to MCR register, data standby
Note 1: these 2 SPI commands must be send in this sequence and
consecutively.
Note 2: if W/D activated
Behavior at SBC power up
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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