Datasheet
4
8042ES–AVR–09/2013
ATmega16HVB/32HVB
1.2.11 Port C (PC4..PC0)
Port C is a 5-bit high voltage Open Drain bi-directional I/O port.
1.2.12 OC/OD
High voltage output to drive Charge/Discharge FET. For details, see ”FET driver” on page 145.
1.2.13 PI/NI
Filtered positive/negative input from external current sense resistor, used to by the Coulomb
Counter ADC to measure charge/discharge currents flowing in the battery pack. For details, see
”Coulomb counter – Dedicated fuel gauging Sigma-Delta ADC” on page 108.
1.2.14 PPI/NNI
Unfiltered positive/negative input from external current sense resistor, used by the battery pro-
tection circuit, for over-current and short-circuit detection. For details, see ”Battery protection” on
page 132.
1.2.15 NV/PV1/PV2/PV3/PV4
NV, PV1, PV2, PV3, and PV4 are the inputs for battery cells one, two, three and four, used by
the Voltage ADC to measure each cell voltage. For details, see ”Voltage ADC – 7-channel gen-
eral purpose 12-bit Sigma-Delta ADC” on page 116.
1.2.16 PVT
Defines the source voltage level for the Charge FET driver. For details, see ”FET driver” on page
145.
1.2.17 BATT
Input for detecting when a charger is connected. Defines the source voltage level for the Dis-
charge FET driver. For details, see ”FET driver” on page 145.
1.2.18 RESET
/dw
Reset input. A low level on this pin for longer than the minimum pulse length will generate a
reset, even if the clock is not running. The minimum pulse length is given in Table 32-3 on page
227. Shorter pulses are not guaranteed to generate a reset. This pin is also used as debugWIRE
communication pin.