s-8215a Seiko Instruments Inc., s-8215a Datasheet - Page 11

• Manufacturer Part Number: s-8215a
• Description: S-8215a Series Battery Protection Ic
• Manufacturer: Seiko Instruments Inc.

Rev.1.1
4. Test Mode
Pin voltage
Battery voltage
The overcharge detection delay time (t
The test mode can be set by retaining the VDD pin voltage 4.0 V or more higher than the VC1 pin voltage for the
transition time to test mode (t
even if the VDD pin voltage is decreased to the same voltage as that of the VC1 pin voltage.
After that, the latch for retaining the test mode is reset and the S-8215A Series exits from test mode under the
overcharge state.
Caution 1. When the VDD pin voltage is decreased to lower than the UVLO voltage of 2 V (Typ.), the
Test mode
_00
CO pin
Active “H”
CO pin
Active “L”
(n = 1 to 5)
V
CUn
BATTERY PROTECTION IC FOR 4-SERIAL / 5-SERIAL CELL PACK (SECONDARY PROTECTION)
2. Set the test mode when no batteries are overcharged.
3. The overcharge timer reset delay time (t
S-8215A Series exits from test mode.
VDD pin voltage
t
TST
V
HCn
= 80 ms max.
4.0 V or
more
TST
) or longer. The status is retained by the internal latch and the test mode is retained
CU
) can be shortened by entering the test mode.
VC1 pin voltage
Seiko Instruments Inc.
Figure 10
typ. 32 ms
TR
) is not shortened in the test mode.
typ. 2.0 ms
S-8215A Series
11