7643_06 Datasheet, PDF (374/424 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCOMPUTER

7643 Group
APPENDIX
3.5 Control registers
Port P2 pull-up control register
b7 b6 b5 b4 b3 b2 b1 b0
Port P2 pull-upt control register
(PUP2 : address 1216)
b
Name
0 Port P20 pull-up control bit 0 : Disabled
1 : Enabled
1 Port P21 pull-up control bit 0 : Disabled
1 : Enabled
2 Port P22 pull-up control bit 0 : Disabled
1 : Enabled
3 Port P23 pull-up control bit 0 : Disabled
1 : Enabled
4 Port P24 pull-up control bit 0 : Disabled
1 : Enabled
5 Port P25 pull-up control bit 0 : Disabled
1 : Enabled
6 Port P26 pull-up control bit 0 : Disabled
1 : Enabled
7 Port P27 pull-up control bit 0 : Disabled
1 : Enabled
Functions
At reset R W
0
0
0
0
0
0
0
0
Fig. 3.5.15 Structure of Port P2 pull-up control register
USB control register
b7 b6 b5 b4 b3 b2 b1 b0
0
0 0 ^{USB control register}
(USBC : address 1316)
b
Name
Functions
At reset R W
0 Nothing is arranged for this bit.
0
Fix this bit to “0”.
1 USB default state selection 0 : In default state after power-on/reset
0
bit (USBC1)
1 : In default state after USB reset signal
received (Note 1)
2 Nothing is arranged for this bit.
0
Fix this bit to “0”.
3 USB line driver current 0 : High current mode
0
control bit (USBC3)
1 : Low current mode
4 USB line driver supply
0 : Line driver disabled
0
enable bit (USBC4) (Note 2) 1 : Line driver enabled
5 USB clock enable bit
(USBC5)
0 : 48 MHz clock to the USB block disabled 0
1 : 48 MHz clock to the USB block enabled
6 Nothing is arranged for this bit.
0
Fix this bit to “0”.
7 USB enable bit (USBC7) ^{0 : USB block disabled (Note 3)}
0
1 : USB block enabled
Notes 1: Without regard to this bit, USB internal registers (address 005016 to 005F16) go
into the states at reset (default) at the same time when USB reset is detected.
2: When using the MCU in Vcc = 3.3 V, set this bit to “0” and disable the built-in DC-
DC converter.
3: Setting this bit to 0” causes the contents of all USB registers to have the values at
reset.
Fig. 3.5.16 Structure of USB control register
Rev.2.00 Aug 28, 2006 page 51 of 98
REJ09B0133-0200