Datasheet

NXP Semiconductors
FRDM33771BTPLEVB
Featuring the MC33771B battery cell controller IC
FRDM33771BTPLEVBUG All information provided in this document is subject to legal disclaimers. © NXP B.V. 2018. All rights reserved.
User guide Rev. 1.0 — 28 June 2018
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Figure 3. VCOM LED
The VCOM LED indicates when the device is in normal mode. Upon reset, the
MC33771B enters into normal mode (VCOM turns on). If there is no activity on the bus
after a timeout period of 60 seconds, the device enters low-power idle mode (VCOM
turns off). Once the device is initialized, if no communication occurs on the TPL bus
after one second, the device resets and the LED turns off (VCOM off). Depending on the
device settings, the VCOM LED may flash 0.1...8 seconds during cyclic acquisition.
4.7 Test-point definitions
Figure 4 shows the location of the test points on the board.
Figure 4. Test points
The following test points provide access to various signals to and from the board.