NEC Confidential & Proprietary
b) ISENSE
Charging current monitor pin. Because the voltage of ISENSE is according
to the voltage drop of resistors 1.3
Ω
and 1.5
Ω
in parallel. Monitoring the ISENSE
voltage can monitor the charging current.
c) CHG
Charge control pin : Hawk controls the conductivity of FET Via this pin in
order to maintain the constant charging current to 600mA.
d) CHG2
Charge On/Off control pin : If charger voltage on VCHG within normal
range, set CHG2 to logic low to turn on FET.
e) VMONI
Charge voltage monitor pin : To monitor the voltage of battery being
charging.
f) TBAT
Battery pack temperature monitor pin : The battery pack includes an
internal thermister, which is used to produce an analogue signal. TBAT enable the HHP
and external charger to determine the battery temperature, which is used to protect the
battery from overheating while charging
g) GCHG
GND pin of charge control circuit.
h) CHGINT
When charge control circuit state moves, an interrupt signal (high pulse)
generates at this pin. Notified to CPU.
Summary of Contents for N8
Page 1: ...N8 Service Manual Level 3 ...
Page 3: ...NEC Confidential Proprietary Next Section Main Menu Section 1 Precautions for Repair Work 1 ...
Page 24: ...NEC Confidential Proprietary PROGRAMMING CABLE Picture ...
Page 29: ...NEC Confidential Proprietary KEY SHEET ASSEMBLY ...
Page 30: ...NEC Confidential Proprietary INTER CONNECTION ...
Page 31: ...NEC Confidential Proprietary RF BLOCK DIAGRAM ...
Page 52: ...NEC Confidential Proprietary DATA CABLE ...
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Page 69: ...NEC Confidential Proprietary 8 Key Sheet Assy LOWER KEY SHEET ASSY INTO FRONT COVER M ...
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Page 106: ...NEC Confidential Proprietary IC121 MAY YC0059 T001 HD155148TF BLOCK DIAGRAM ...
Page 107: ...NEC Confidential Proprietary OUTLINE DIAGRAM TOP VIEW ...
Page 110: ...NEC Confidential Proprietary IC251 MAY YB0002 T001 PSC2011CHRS DT BLOCK DIAGRAM ...
Page 111: ...NEC Confidential Proprietary OUTLINE DIAGRAM TOP SEE THROUGH ...
Page 112: ...NEC Confidential Proprietary PIN INFORMATION ...
Page 113: ...NEC Confidential Proprietary PIN INFORMATION CONTINUED ...
Page 114: ...NEC Confidential Proprietary PIN INFORMATION CONTINUED ...
Page 115: ...NEC Confidential Proprietary IC301 MAY YB0003 B001 TR09BFTGB17IN2B DB BLOCK DIAGRAM ...
Page 116: ...NEC Confidential Proprietary OUTLINE DIAGRAM TOP SEE THROUGH ...
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Page 124: ...NEC Confidential Proprietary OUTLINE DIAGRAM PIN INFORMATION 1 VDD 2 VSS 3 N C 4 VOUT 2 4 3 1 ...
Page 126: ...NEC Confidential Proprietary OUTLINE DIAGRAM TOP SEE THROUGH ...
Page 129: ...IC421 MAY YA0017 A001 MPD89064K9 001 4AA OUTLINE DIAGRAM ...
Page 133: ...NEC Confidential Proprietary U111 MAY YY0020 T001 RF3110 BLOCK DIAGRAM OUTLINE DIAGRAM ...
Page 134: ...NEC Confidential Proprietary PIN INFORMATION ...
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Page 153: ...NEC Confidential Proprietary Previous Section Next Section Main Menu Section 10 Parts List 10 ...
Page 172: ...NEC Confidential Proprietary Previous Section Main Menu Section 11 Glossary of Terms 11 ...