ATmega88PA Automotive Atmel Corporation, ATmega88PA Automotive Datasheet - Page 45

• Manufacturer Part Number: ATmega88PA Automotive
• Manufacturer: Atmel Corporation

10.11.2
10.11.3
9223B–AVR–09/11
MCUCR – MCU Control Register
PRR – Power Reduction Register
• Bit 6 – BODS: BOD Sleep
The BODS bit must be written to logic one in order to turn off BOD during sleep, see
10-1 on page
BODSE in MCUCR. To disable BOD in relevant sleep modes, both BODS and BODSE must
first be set to one. Then, to set the BODS bit, BODS must be set to one and BODSE must be
set to zero within four clock cycles.
The BODS bit is active three clock cycles after it is set. A sleep instruction must be executed
while BODS is active in order to turn off the BOD for the actual sleep mode. The BODS bit is
automatically cleared after three clock cycles.
• Bit 5 – BODSE: BOD Sleep Enable
BODSE enables setting of BODS control bit, as explained in BODS bit description. BOD dis-
able is controlled by a timed sequence.
Note:
• Bit 7 – PRTWI: Power Reduction TWI
Writing a logic one to this bit shuts down the TWI by stopping the clock to the module. When
waking up the TWI again, the TWI should be re initialized to ensure proper operation.
• Bit 6 – PRTIM2: Power Reduction Timer/Counter2
Writing a logic one to this bit shuts down the Timer/Counter2 module in synchronous mode
(AS2 is 0). When the Timer/Counter2 is enabled, operation will continue like before the
shutdown.
• Bit 5 – PRTIM0: Power Reduction Timer/Counter0
Writing a logic one to this bit shuts down the Timer/Counter0 module. When the
Timer/Counter0 is enabled, operation will continue like before the shutdown.
• Bit 4 – Reserved
This bit is reserved in Atmel
• Bit 3 – PRTIM1: Power Reduction Timer/Counter1
Writing a logic one to this bit shuts down the Timer/Counter1 module. When the
Timer/Counter1 is enabled, operation will continue like before the shutdown.
Bit
0x35 (0x55)
Read/Write
Initial Value
Bit
(0x64)
Read/Write
Initial Value
Atmel ATmega48PA/88PA/168PA [Preliminary]
1. BODS and BODSE only available for picoPower devices ATmega48PA/88PA/168PA
PRTWI
39. Writing to the BODS bit is controlled by a timed sequence and an enable bit,
R/W
7
0
R
7
–
0
PRTIM2
BODS
R/W
R/W
6
0
6
0
()
®
()
ATmega48PA/88PA/168PA and will always read as zero.
PRTIM0
BODSE
R/W
5
0
R/W
5
0
()
()
R
4
–
0
PUD
R/W
4
0
PRTIM1
R/W
3
0
R
3
–
0
PRSPI
R/W
2
0
R
2
–
0
PRUSART0
IVSEL
R/W
R/W
1
0
1
0
IVCE
R/W
PRADC
0
0
R/W
0
0
MCUCR
Table
PRR
45