C8051F911-GM View Datasheet(PDF) - Silicon Laboratories
Part Name
Description
Manufacturer
C8051F911-GM
Silicon Laboratories
C8051F911-GM Datasheet PDF : 318 Pages
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C8051F91x-C8051F90x
Table 3.1. Pin Definitions for the C8051F91x-C8051F90x (Continued)
Name
XTAL3
XTAL4
P0.0
VREF
P0.1
AGND
P0.2
XTAL1
Pin Numbers
‘F912-GM ‘F912-GU
‘F902-GM ‘F902-GU
‘F911-GM ‘F911-GU
‘F901-GM ‘F901-GU
Type
Description
9
12
A In SmaRTClock Oscillator Crystal Input.
See Section 20 for a complete description.
8
11
A Out SmaRTClock Oscillator Crystal Output.
See Section 20 for a complete description.
24
3
D I/O or Port 0.0. See Port I/O Section for a complete description.
A In
A In
A Out
External VREF Input.
Internal VREF Output. External VREF decoupling capacitors are
recommended. See Section “5.9. Voltage and Ground Reference
Options” on page 83.
23
2
D I/O or Port 0.1. See Port I/O Section for a complete description.
A In
Optional Analog Ground. See Section “5.9. Voltage and Ground
G Reference Options” on page 83.
22
1
D I/O or Port 0.2. See Port I/O Section for a complete description.
A In
External Clock Input. This pin is the external oscillator return for a
A In crystal or resonator. See Section “19. Clocking Sources” on
page 179.
RTCOUT*
P0.3
21
Buffered SmaRTClock oscillator output.
24 D I/O or Port 0.3. See Section “21. Port Input/Output” on page 205 for a
A In complete description.
XTAL2
WAKEOUT*
P0.4
20
A Out
D In
A In
External Clock Output. This pin is the excitation driver for an exter-
nal crystal or resonator.
External Clock Input. This pin is the external clock input in external
CMOS clock mode.
External Clock Input. This pin is the external clock input in capaci-
tor or RC oscillator configurations.
See Section “19. Clocking Sources” on page 179 for complete
details.
Wake-up request signal to wake up external devices (e.g. an
external DC-DC converter).
23 D I/O or Port 0.4. See Section “21. Port Input/Output” on page 205 for a
A In complete description.
TX
P0.5
D Out UART TX Pin. See Section “21. Port Input/Output” on page 205.
19
22 D I/O or Port 0.5. See Section “21. Port Input/Output” on page 205 for a
A In complete description.
RX
D In
*Note: Available only on the C8051F912/02.
UART RX Pin. See Section “21. Port Input/Output” on page 205.
28
Rev. 1.0
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