參數(shù)資料
型號(hào)： TLE 6263
廠商： SIEMENS AG
英文描述： CAN-LDO-ASIC(控制區(qū)域網(wǎng)絡(luò)低壓差用于汽車電路的專用集成電路)
中文描述： 的CAN - LDO穩(wěn)壓器，專用集成電路（控制區(qū)域網(wǎng)絡(luò)低壓差用于汽車電路的專用集成電路）
文件頁(yè)數(shù)： 11/37頁(yè)
文件大?。?/td> 839K
代理商： TLE 6263
confidential
Preliminary Data
TLE 6263
11
version: 2.00 date: 19.12.00
Table 5,
Diagnosis Data Protocol
Table 6,
Diagnosis Data Protocol
RxD-only mode V
bat
-Stand-by mode
Window Watchdog, Reset
When the input voltage exceeds the reset threshold voltage the reset output RO is
switched HIGH after a delay time of typ. 8ms. This is necessary for a defined start of the
microcontroller when the application is switched on. As soon as an under-voltage
condition of the output voltage (V
CC
< V
RT
) appears, the reset output RO is switched
LOW again. The LOW signal is guaranteed down to an output voltage V
Q
≥
1V. Please
refer to
fig. 9
, reset timing diagram.
After the above described delayed reset (LOW to HIGH transition of RO) the window
watchdog circuit is started by opening a long open window of typ. 65ms. The long open
window allows the microcontroller to run his set-up and then to trigger the watchdog via
the SPI. Within the long open window period a watchdog trigger is detected as a
“
rising
edge
”
by sampling a HIGH on the IBIT 0. The trigger is accepted when the CSN input
becomes HIGH after the transmission of the SPI word. After each reset as well as after
a power on condition the default value of IBIT 0 is LOW.
A correct watchdog trigger results in starting the window watchdog by opening a closed
window of typ. 6 ms followed by a open window of typ. 10 ms. From now on the
microcontroller has to service the watchdog trigger by inverting the IBIT 0 alternating.
The
“
negative
”
or
“
positive
”
edge has to meet the open window time. A correct watchdog
OBIT
7
6
5
4
3
2
1
0
H = ON
L = OFF
OBIT
7
6
5
4
3
2
1
0
H = ON
L = OFF
CAN Failure 5 and 7
CAN Failure 6
CAN Failure 6a
CAN Failure 2 and 4
CAN Failure 3
CAN Failure 1 and 3a
Window Watchdog Reset
Temperature Prewarning
V
CC
Not-Fail
V
INT
Not-Fail
WK1/2 Initialization Fail
Wake via CAN bus lines
WK2 voltage level
WK1 voltage level
Window Watchdog Reset
Temperature Prewarning
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