mc33905s Freescale Semiconductor, Inc, mc33905s Datasheet - Page 37

• Manufacturer Part Number: mc33905s
• Description: System Basis Chip Gen2 With High Speed Can And Lin Interface
• Manufacturer: Freescale Semiconductor, Inc

Table 6. Device Block Operation for Each State
Analog Integrated Circuit Device Data
Freescale Semiconductor
Notes
Low power V
Low power V
legend:
21.
22.
SAFE output low:
Normal Request
The 5V-CAN default is ON when the device is powered-up and set in Debug Mode. It is fully controllable via the SPI command.
5V-CAN
BATFAIL
Power down
Safe case A
MODE
Init Reset
VAUX
V
Normal
FLASH
RST
Reset
State
V
With limited current capability
5V-CAN is ON in Debug mode.
SUP
INT
SPI
INIT
DD
A
Single SPI
DD
DD
OFF
Series of SPI
ON
Power up to Normal Mode
safe case B:
>4V
safe case
ON
s_1: go to Normal Mode
s_11: write INT registers
A:ON
RESET
VDD
Vdd-uv (4.5V typ)
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
(21)
Keep SPI config
Keep SPI config
config, B: OFF
A: Keep SPI
INIT
SPI config
SPI config
FUNCTIONAL BLOCK OPERATION VERSUS MODE
5V-CAN
ILLUSTRATION OF DEVICE MODE TRANSITIONS.
OFF
OFF
OFF
OFF
OFF
Figure 19. Power Up Normal and Low Power Modes
NORMAL
B
wake-up by change
Wake up disable
WU SPI config
WU SPI config
WU SPI config
user defined
user defined
WU disable
WU disable
WU disable
5V-CAN
SPI config
SPI config
SPI config
I/Ox / WU
HS/LS off
HS/LS off
HS/LS off
HS/LS off
VAUX
V
RST
state
OFF
V
SPI
SUP
INT
DD
B
s_2: go to Low Power V
s_12: Low Power Mode configuration
Normal to Low Power
SPI config
SPI config
VAUX
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
NORMAL LP V
V
DD
OFF Mode
DD
Transmitter / receiver /wake-up
CAN termination 25k to gnd
OFF Mode
Vdd-uv
DD
OFF + wake-up enable
OFF + wake-up en/dis
OFF + wake-up en/dis
Off
FUNCTIONAL BLOCK OPERATION VERSUS MODE
High-impedance
C
SPI config
SPI config
OFF:
CAN
OFF
OFF
OFF
OFF
5V-CAN
VAUX
V
RST
V
SPI
SUP
INT
DD
B
FUNCTIONAL DEVICE OPERATION
s_13: Low Power Mode configuration
s_3: go to Low Power Mode
Normal to Low Power
internal 30k pull up active.
OFF + wake-up enable
OFF + wake-up en/dis
OFF + wake-up en/dis
Transmitter: receiver /
NORMAL
High-impedance
wake up OFF.
LIN term OFF
V
SPI config
DD
LIN1/2
OFF:
OFF
OFF
OFF
OFF
ON Mode
LP V
DD
On
D
33904/5
37