C8051F020-TB Silicon Laboratories Inc, C8051F020-TB Datasheet - Page 176
C8051F020-TB
Manufacturer Part Number
C8051F020-TB
Description
BOARD PROTOTYPING W/C8051F020
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F020-TB
Contents
Board
Processor To Be Evaluated
C8051F02x
Interface Type
USB
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
C8051F020
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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C8051F020/1/2/3
176
Bits7-0:
Note:
Bits7-0:
Note:
P3.7
R/W
R/W
Bit7
Bit7
P3.[7:0]: Port3 Output Latch Bits.
(Write - Output appears on I/O pins per XBR0, XBR1, XBR2, and XBR3 Registers)
0: Logic Low Output.
1: Logic High Output (open if corresponding P3MDOUT.n bit = 0).
(Read - Regardless of XBR0, XBR1, XBR2, and XBR3 Register settings).
0: P3.n pin is logic low.
1: P3.n pin is logic high.
P3.[7:0] can be driven by the External Data Memory Interface (as AD[7:0] in Multiplexed mode, or
as D[7:0] in Non-multiplexed mode). See
FACE AND ON-CHIP XRAM” on page 145
Interface.
P3MDOUT.[7:0]: Port3 Output Mode Bits.
0: Port Pin output mode is configured as Open-Drain.
1: Port Pin output mode is configured as Push-Pull.
SDA, SCL, and RX0 (when UART0 is in Mode 0) and RX1 (when UART1 is in Mode 0) are always
configured as Open-Drain when they appear on Port pins.
P3.6
R/W
R/W
Bit6
Bit6
Figure 17.18. P3MDOUT: Port3 Output Mode Register
P3.5
R/W
R/W
Bit5
Bit5
Figure 17.17. P3: Port3 Data Register
P3.4
R/W
R/W
Bit4
Bit4
Rev. 1.4
P3.3
Section “16. EXTERNAL DATA MEMORY INTER-
R/W
R/W
Bit3
Bit3
for more information about the External Memory
P3.2
R/W
R/W
Bit2
Bit2
P3.1
R/W
R/W
Bit1
Bit1
(bit addressable)
P3.0
R/W
R/W
Bit0
Bit0
SFR Address:
SFR Address:
00000000
Reset Value
11111111
Reset Value
0xB0
0xA7
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