Rainbow Electronics Atmega169L - Manual (Page 37)

37
ATmega169V/L
2514A–AVR–08/02
Figure 14. Reset Logic
Notes: 1. Values are guidelines only. Actual values are TBD.
2. The Power-on Reset will not work unless the supply voltage has been below V
POT
(falling)
Table 16. Reset Characteristics (1)
Symbol Parameter Condition Min Typ Max Units
V
POT
Power-on Reset Threshold
Voltage (rising)
TBD TBD TBD V
Power-on Reset Threshold
Voltage (falling)
(2)
TBD TBD TBD V
V
RST
RESET Pin Threshold Voltage TBD TBD TBD V
t
RST
Minimum pulse width on RESET
Pin
TBD TBD TBD ns
MCU Status
Register (MCUSR)
Brown-out
Reset Circuit BODLEVEL [2..0]
Delay Counters
CKSEL[3:0]
CK
TIMEOUT
WDRF BORF
EXTRF
PORF
DATA BUS
Clock
Generator
SPIKE
FILTER
Pull-up Resistor
JTRF
JTAG Reset
Register
Watchdog
Oscillator
SUT[1:0]
Power-on Reset
Circuit