ATAVRSB202 Atmel, ATAVRSB202 Datasheet - Page 43

• Manufacturer Part Number: ATAVRSB202
• Description: KIT BATT MGMT FOR ATMEGA32HVB
• Manufacturer: Atmel

Specifications of ATAVRSB202

• Main Purpose: *
• Embedded: *
• Utilized Ic / Part: *
• Primary Attributes: *
• Secondary Attributes: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

11.2.1
8042B–AVR–06/10
Power-on Reset and Charger Connect
Figure 11-1. Reset Logic
The Voltage Regulator will not start up until the Charger Detect module has enabled it. Before
this happens the chip will be in Power-off mode and only the Charger Detect module is enabled.
In order for the Charger Detect module to enable the Voltage Regulator, the voltage at the BATT
pin must exceed the Power-On Threshold Voltage, V
exceeds V
Delay Counter times out, the chip will enter Active mode. See
details on Charger Detect, see
RESET
V
BATT
/dW
FET
POT
V
REG
, the Voltage Regulator starts up and the chip enters RESET mode. When the
Pull-up Resistor
FILTER
SPIKE
V
REG
”Charger Detect” on page
Ultra Low Power
RC Oscillator
Reset Circuit
SUT[1:0]
debugWIRE
Watchdog
Brown-out
Power-on
Detection
Generator
Charger
Circuit/
Detect
Timer
Reset
Clock
POR
CK
Register (MCUSR)
MCU Status
DATA BUS
Delay Counters
ATmega16HVB/32HVB
POT
COUNTER RESET
129.
. When the voltage at the BATT pin
TIMEOUT
Figure 10-1 on page
36. For
43