TLE7824G Infineon Technologies, TLE7824G Datasheet - Page 15

• Manufacturer Part Number: TLE7824G
• Description: IC LDO VREG/LIN TXRX DSO-28
• Manufacturer: Infineon Technologies

Specifications of TLE7824G

• Applications: Special Purpose
• Voltage - Supply: 3.9 V ~ 27 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: DSO-28
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: SP000264461

4.5.3
The SBC Stop Mode has the advantage of reducing the current consumption to a minimum, while supplying the
microcontroller with its quiescent current during its power saving mode (“Stop”). This mode is entered via SPI
command, and turns-off the integrated LIN bus transceiver, but the voltage regulator remains active.
The SBC periodically generates a wake-up “low” pulse at DO (“interconnect signal”) that is connected to an
interrupt input [P1.4] of the microcontroller. This period can be defined via the “cyclic wake period” bit field within
the SPI register. This pulse at DO has a length of two internal SBC cycles.
In case of a detected wake-up event via LIN message or any of the MONx pins, DO stays “low” until the first valid
SPI command.
Note: The window watchdog is automatically disabled once the LDO output current goes below a specified
Note: A wake-up event via LIN message or via MONx inputs can happen independently of the cyclic wake phase.
Note: The Window Watchdog starts with a “long open window” after a mode switch, e.g. to SBC Active Mode.
Figure 8
Data Sheet
1)
NOTES:
automatically once current
window watchdog activated
“watchdog current threshold”, unless the SPI setting “WD On/Off” prevents this (see
threshold is exceeded
MS2
0
SBC Active Mode
SBC Stop Mode with Cyclic Wake
State Diagram “SBC Stop Mode with Cyclic Wake”
MS1
1
MS0
0 / 1
„single“ µController SPI -Command:
- select „cyclic wake timing“ via SPI Timing Bits
- select SBC Stop Mode via SPI Mode Bits
- window watchdog activation / deactivation via SPI
[„off“ once current consumption below threshold ]
Vcc
ON
MS2
1
LIN message independent of cyclic
STOP: Cyclic Wake
2)
wake phase („asynchronous“ )
wake-up via MONx inputs and
MS1
1
MS0
1
Vcc
ON
15
SBC Standby Mode
transition caused by:
- event at MONx inputs:
- LIN message
=> DO „low“
=> RxD + DO „low“
[SPI indicates source]
µC wake-up inputs
cyclic wake-up
Vcc
ON
2)
Rev. 3.01, 2008-04-15
Figure
select SBC
Operating Modes
operating
µC
mode
Power Up
Start Up
10).
1)
TLE7824G