Datasheet

Table 33-9. BODLEVEL Fuse Coding
(1)(2)
BODLEVEL [2:0] Fuses Min. V
BOT
Typ. V
BOT
Max V
BOT
Units
111 BOD Disabled
110 1.7 1.8 2.0 V
101 2.5 2.7 2.9
100 4.1 4.3 4.5
011 - 000 Reserved
Note: V
BOT
may be below nominal minimum operating voltage for some devices. For devices where this
is the case, the device is tested down to V
CC
= V
BOT
during the production test. This assures that a
Brown-Out Reset will occur before V
CC
drops to a voltage where correct operation of the microcontroller
is no longer certain. The test is performed using BODLEVEL = 110, 101 and 100.
Note: V
BOT
tested at 25°C and 85°C in production
33.6 SPI Timing Characteristics
Table 33-10. SPI Timing Parameters
Description Mode Min. Typ Max Units
1 SCK period Master - See Table. Relationship Between SCK and the Oscillator
Frequency in SPCR – SPI Control Register
- ns
2 SCK high/low Master - 50% duty cycle -
3 Rise/Fall time Master - 3.6 -
4 Setup Master - 10 -
5 Hold Master - 10 -
6 Out to SCK Master - 0.5 • t
sck
-
7 SCK to out Master - 10 -
8 SCK to out high Master - 10 -
9 SS low to out Slave - 15 -
10 SCK period Slave 4 • t
ck
- -
11 SCK high/low
(1)
Slave 2 • t
ck
- -
12 Rise/Fall time Slave - - 1600
13 Setup Slave 10 - -
14 Hold Slave t
ck
- -
15 SCK to out Slave - 15 -
16 SCK to SS high Slave 20 - -
ATmega48PA/88PA/168PA
Electrical Characteristics
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40002011A-page 391