C8051F704-GQ Silicon Laboratories Inc, C8051F704-GQ Datasheet - Page 173
![IC 8051 MCU 15K FLASH 48-TQFP](/photos/12/36/123601/c8051f704-gq_sml.jpg)
C8051F704-GQ
Manufacturer Part Number
C8051F704-GQ
Description
IC 8051 MCU 15K FLASH 48-TQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F70xr
Specifications of C8051F704-GQ
Program Memory Type
FLASH
Program Memory Size
15KB (15K x 8)
Package / Case
48-TQFP, 48-VQFP
Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
Cap Sense, POR, PWM, Temp Sensor, WDT
Number Of I /o
39
Eeprom Size
32 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
C8051F7x
Core
8051
Data Bus Width
8 bit
Data Ram Size
512 B
Interface Type
I2C, SPI, UART
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
39
Number Of Timers
4 x 16 bit
Operating Supply Voltage
1.8 V to 3.3 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Development Tools By Supplier
C8051F700DK
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 16 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
336-1635 - DEV KIT FOR C8051F700
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1611
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F704-GQ
Manufacturer:
SILICON
Quantity:
890
Company:
Part Number:
C8051F704-GQ
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
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Part Number:
C8051F704-GQR
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
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27.2. Programmable Internal High-Frequency (H-F) Oscillator
All C8051F70x/71x devices include a programmable internal high-frequency oscillator that defaults as the
system clock after a system reset. The internal oscillator period can be adjusted via the OSCICL register
as defined by SFR Definition 27.2.
On C8051F70x/71x devices, OSCICL is factory calibrated to obtain a 24.5 MHz base frequency.
The internal oscillator output frequency may be divided by 1, 2, 4, or 8, as defined by the IFCN bits in reg-
ister OSCICN. The divide value defaults to 8 following a reset.
The precision oscillator supports a spread spectrum mode which modulates the output frequency in order
to reduce the EMI generated by the system. When enabled (SSE = 1), the oscillator output frequency is
modulated by a stepped triangle wave whose frequency is equal to the oscillator frequency divided by 384
(63.8 kHz using the factory calibration). The maximum deviation from the center frequency is ±0.75%. The
output frequency updates occur every 32 cycles and the step size is typically 0.25% of the center fre-
quency.
SFR Definition 27.2. OSCICL: Internal H-F Oscillator Calibration
SFR Address = 0xBF; SFR Page = F
Name
Reset
Bit
6:0 OSCICL[7:0] Internal Oscillator Calibration Bits.
Type
Bit
Name
Varies
7
These bits determine the internal oscillator period. When set to 00000000b, the H-F
oscillator operates at its fastest setting. When set to 11111111b, the H-F oscillator
operates at its slowest setting. The reset value is factory calibrated to generate an
internal oscillator frequency of 24.5 MHz.
Varies
6
Varies
5
Varies
Rev. 1.0
4
OSCICL[6:0]
R/W
Function
Varies
3
Varies
C8051F70x/71x
2
Varies
1
Varies
0
173
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