TLE7263E Infineon Technologies, TLE7263E Datasheet - Page 9

• Manufacturer Part Number: TLE7263E
• Description: IC SYSTEM BASIS CHIP DSO-36
• Manufacturer: Infineon Technologies

Specifications of TLE7263E

• Controller Type: System Basis Chip
• Interface: SPI
• Voltage - Supply: 13.5V
• Current - Supply: 1mA
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: DSO-36
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: SP000075929; TLE7263E; TLE7263EINTR

TLE 7263E
Features
4.1
Operation Modes
This System Basis Chip (SBC) offers five main operation modes that are controlled via
three mode select bits MS1, MS2 and MS3 within the SPI: SBC Active, Standby, Sleep
and Stop mode, as well as CAN Receive-Only mode. After powering-up the SBC, it
starts-up in SBC Standby Mode, waiting for the microcontroller to finish its startup and
initialization sequences. From this transition mode the SBC can be switched via SPI
command into the desired operating mode (The device should not be switched directly
from Standby Mode to Sleep or Stop Mode). All modes are selected via SPI bits or
certain operation conditions, e.g. external wake-up events.
The SBC Active Mode, that is used in order to transmit and receive CAN and LIN
messages, supports two additional sub-modes, “CAN Sleep” and “LIN Sleep”. During
these sub-modes the SBC remains its voltage regulators running in order to supply
external devices. Also, the line termination of the “sleeping” bus transceiver is turned-off
respectively.
During SBC Sleep Mode, the lowest power consumption is achieved, by having its main
voltage regulator switched-off. As the microcontroller can not be supplied, the integrated
window watchdog might be disabled in Sleep Mode via SPI bit. However, it can be
turned-on for periodically waking-up the system, e.g. ECU, by generating a reset.
In case an external microcontroller needs to be supplied with its quiescent current, the
SBC Stop Mode can be chosen. In this mode the main voltage regulator remains active.
Optionally, the second voltage regulator can be turned-on or off via the SPI prior to
entering one of the respective power saving modes. The integrated window watchdog
remains active until the microcontroller enters its power saving mode (“Stop Mode”). This
power saving mode is assumed to be reached once the current consumption is below a
certain threshold (see
Watchdog current
threshold,
Table
and
“Window Watchdog,
Reset” on Page
26).
In both low power modes the internal bus transceivers, including the line termination, are
turned off while the wake-up capabilities via bus message or monitoring pins are still
active. The SBC offers Sleep and Stop Mode in conjunction with or without the Cyclic
Sense/Wake feature. If the Cyclic Sense/Wake feature is selected, two possible states
can be entered during Sleep/Stop Mode: HS-On and HS-Off (see text and respective
state diagram).
The Cyclic Sense feature can be used to supply an external wake-up circuitry
periodically, and is entered upon activation via SPI command. In cyclic sense HS-On
state, the High-Side switch is activated for a certain “on-time” and provides supply
voltage at its OUTHS pin. Within this on-time the SBC starts sampling of the
monitoring/wake-up lines. On-time as well as time period are programmable via the SPI
control word. A wake-up at the monitoring / wake-up pins during the on-time as well as
a message at the CAN or LIN bus lines automatically sets the TLE 7263E into SBC
V
Standby mode, and turns-on the main voltage regulator
. The digital RxD
/RxD
CC1
CAN
LIN
lines, that are monitored by the microcontroller during power saving, are pulled low with
Data Sheet
9
Rev. 1.51, 2007-06-22