M62244FP
(5) Adapter-detection voltage 1
Vrchg_c
Vrchg_o
=
=
5.20 → 14.3dB
4.95 → 13.9dB
Voltage on the Vadp1 pin
Voltage on the Vadp1 pin
(open-circuit)
(6) Adapter-detection voltage 2
Vrchg_c
Vrchg_o
Voltage on the Vadp2 pin
Voltage on the Vadp2 pin
(open-circuit)
12. Forcible termination of charging
Charge is forcibly stopped by setting the STOP signal to low level. At this time, the LEDs are turned off and all
timers are initialized.
13. Frequency of oscillation
External side
IC side
Vcvre
f
R [Ω
]
CO SC
The rated oscillation frequency of this IC is 1.28 kHz,
the value when R = 100 kΩ and C = 0.01 µF in the figure.
Change the values of R and C to change the frequency.
C [ F]
Note: Changing the frequency of oscillation changes the timing
of the IC's charge timers.
(1) External C, R, and oscillation frequency
C [µF]
0.0022
5.695
0.047
2.666
0.01
1.253
0.022
0.570
0.047
0.267
0.1
82k
91k
0.125
0.129
0.128
0.124
0.120
0.115
5.878
5.818
5.647
5.435
5.210
2.751
2.723
2.643
2.544
2.439
1.298
1.280
1.242
1.196
1.146
0.588
0.582
0.565
0.543
0.521
0.275
0.272
0.264
0.254
0.244
100k
110k
120k
130k
R [Ω]
Note: Frequency is in kHz. Variation of C and R values is not taken into account.
(2) Relation between the frequency of oscillation and timing, for each timer
Item
Value (frequency of oscillation = Fosc (Hz))
Charge timer (min.)
1.28k/Fosc × 240
Precharge timer 1 (min.)
1.28k/Fosc × 10
Precharge timer 2 (min.)
1.28k/Fosc × 60
Frequency of LED1 blinking (LED2 = high) (Hz)
Frequency of LED1 blinking (LED2 = ground) (Hz)
Fosc/1.28k × 2.5
Fosc/1.28k × 0.625
Rev.1.0, Sep.19.2003, page 15 of 17
RENESAS [ RENESAS TECHNOLOGY CORP ]
