NXP Semiconductors
FRDM33772BTPLEVB
Featuring the MC33772B battery cell controller IC
FRDM33772BTPLEVBUG
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© NXP B.V. 2018. All rights reserved.
User guide
Rev. 1.0 — 22 June 2018
8 / 17
Figure 5. Connectors
Table 4. Cell connector (X1)
Pin #
Connection
Description
X1-2
VBAT
MC33772B Power supply
X1-19
X1-20
CT_6
CB_6
Cell pin 6 input with external LPF resistor.
Cell balance driver. Terminate to cell 6 cell balance load resistor
X1-21
X1-22
CT_5
CB_6:5_C
Cell pin 5 input with external LPF resistor.
Cell balance 6:5 common. Terminate to cell 6 and 5 common pin
X1-23
X1-24
CT_4
CB_5/CB_4
Cell pin 4 input with external LPF resistor.
Cell balance driver. Terminate to cell 5 and 4 cell balance load resistor
X1-25
X1-26
CT_3
CB_4:3_C
Cell pin 3 input with external LPF resistor.
Cell balance 4:3 common. Terminate to cell 4 and 3 common pin
X1-27
X1-28
CT_2
CB_3/CB_2
Cell pin 2 input with external LPF resistor.
Cell balance driver. Terminate to cell 3 and 2 cell balance load resistor
X1-29
X1-30
CT_1
CB_2:1_C
Cell pin 1 input with external LPF resistor.
Cell balance 2:1 common. Terminate to cell 2 and 1 common pin
X1-31 ISENSE_P
Current measurement input+ with external filter RC
X1-32 ISENSE_N
Current measurement input– with external filter RC
X1-33 CT_REF
CB_1
Cell pin REF input with external LPF resistor.
Cell balance driver. Terminate to cell 1 cell balance load resistor.
X1-34 GND
Negative_Battery
4.9 External EEPROM
The FRDM33772BTPLEVB has an integrated gateway communication link to an external
local EEPROM. The MC33772B's I
2
C Communication Interface manages communication
with the EEPROM.
After a reset, the EEPROM is not enabled. When the EEPROM is enabled, the device
can load the EEPROM calibration parameters into the MC33772B registers.
