ata6616 ATMEL Corporation, ata6616 Datasheet - Page 99

• Manufacturer Part Number: ata6616
• Description: Microcontroller With Lin Transceiver, 5v Regulator And Watchdog
• Manufacturer: ATMEL Corporation

4.10.3.1
4.10.3.2
9132A–AUTO–10/08
DRAFT
MCU Control Register – MCUCR
Port Control Register – PORTCR
• Bit 4 – PUD: Pull-up Disable
When this bit is written to one, the pull-ups in the I/O ports are disabled even if the DDxn and
PORTxn Registers are configured to enable the pull-ups ({DDxn, PORTxn} = 0, 1). See
uring the Pin” on page 91
• Bits 5, 4 – BBMx: Break-Before-Make Mode Enable
When these bits are written to one, the port-wise Break-Before-Make mode is activated. The
intermediate tri-state cycle is then inserted when writing DDRxn to make an output. For further
information, see
• Bits 1, 0 – PUDx: Port-Wise Pull-up Disable
When these bits are written to one, the port-wise pull-ups in the defined I/O ports are disabled
e v e n i f t h e D D x n a n d P O R T x n R e g is t e r s a r e c o n f i g u r e d t o e n a b l e t h e p u ll - u p s
({DDxn, PORTxn} = 0, 1). The Port-Wise Pull-up Disable bits are ORed with the global Pull-up
Disable bit (PUD) from the MCUCR register. See
details about this feature.
Initial Value
Initial Value
Read/Write
Read/Write
Bit
Bit
R/W
R
7
–
0
7
0
-
“Break-Before-Make Switching” on page
BODS
R/W
R/W
6
0
6
0
for more details about this feature.
-
BODSE
BBMB
ATA6616/ATA6617 [Preliminary]
R/W
R/W
5
0
5
0
BBMA
PUD
R/W
R/W
4
0
4
0
“Configuring the Pin” on page 91
R/W
R
3
–
0
3
0
-
92.
R/W
R
2
–
0
2
0
-
PUDB
R/W
R
1
–
0
1
0
PUDA
R/W
R
0
–
0
0
0
for more
PORTCR
“Config-
MCUCR
99