C8051F966-A-GQ Silicon Labs, C8051F966-A-GQ Datasheet - Page 294

• Manufacturer Part Number: C8051F966-A-GQ
• Description: 8-bit Microcontrollers - MCU 32KB DC-DC LCD AES
• Manufacturer: Silicon Labs

Specifications of C8051F966-A-GQ

• Rohs: yes
• Core: 8051
• Processor Series: C8051
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 24.5 MHz
• Program Memory Size: 32 KB
• Data Ram Size: 8 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 1.8 V to 3.8 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: QFP-80
• Mounting Style: SMD/SMT

C8051F96x
SFR Definition 23.4. OSCXCN: External Oscillator Control
SFR Page = 0x0; SFR Address = 0xB1
294
Name XCLKVLD
Reset
Type
Bit
6:4
2:0
Bit
7
3
XCLKVLD External Oscillator Valid Flag.
XOSCMD External Oscillator Mode Bits.
Reserved Read = 0b. Must Write 0b.
XFCN
Name
R
7
0
Provides External Oscillator status and is valid at all times for all modes of operation
except External CMOS Clock Mode and External CMOS Clock Mode with divide by
2. In these modes, XCLKVLD always returns 0.
0: External Oscillator is unused or not yet stable.
1: External Oscillator is running and stable.
Configures the external oscillator circuit to the selected mode.
00x: External Oscillator circuit disabled.
010: External CMOS Clock Mode.
011: External CMOS Clock Mode with divide by 2 stage.
100: RC Oscillator Mode.
101: Capacitor Oscillator Mode.
110: Crystal Oscillator Mode.
111: Crystal Oscillator Mode with divide by 2 stage.
External Oscillator Frequency Control Bits.
Controls the external oscillator bias current.
000-111: See Table 23.1 on page 288 (Crystal Mode) or Table 23.2 on page 289 (RC
or C Mode) for recommended settings.
R
6
0
XOSCMD[2:0]
R/W
5
0
R/W
Rev. 0.5
4
0
Function
R/W
3
0
R/W
2
0
XFCN[2:0]
R/W
1
0
R/W
0
0