C8051F040-GQ Silicon Laboratories Inc, C8051F040-GQ Datasheet - Page 175
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C8051F040-GQ
Manufacturer Part Number
C8051F040-GQ
Description
IC 8051 MCU 64K FLASH 100TQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F04xr
Datasheets
1.C8051F040-TB.pdf
(328 pages)
2.C8051F040-TB.pdf
(2 pages)
3.C8051F043-GQ.pdf
(328 pages)
Specifications of C8051F040-GQ
Program Memory Type
FLASH
Program Memory Size
64KB (64K x 8)
Package / Case
100-TQFP, 100-VQFP
Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
CAN, EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
64
Ram Size
4.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x8b, 13x12b; D/A 2x10b, 2x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
C8051F0x
Core
8051
Data Bus Width
8 bit
Data Ram Size
4.25 KB
Interface Type
CAN/SMBus/SPI/UART
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
64
Number Of Timers
5
Operating Supply Voltage
2.7 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Development Tools By Supplier
C8051F040DK
Minimum Operating Temperature
- 40 C
On-chip Adc
8-ch x 8-bit or 13-ch x 12-bit
On-chip Dac
2-ch x 12-bit
No. Of I/o's
64
Ram Memory Size
4352Byte
Cpu Speed
25MHz
No. Of Timers
5
Rohs Compliant
Yes
Data Rom Size
64 KB
A/d Bit Size
12 bit
A/d Channels Available
13
Height
1 mm
Length
14 mm
Supply Voltage (max)
3.6 V
Supply Voltage (min)
2.7 V
Width
14 mm
Package
100TQFP
Device Core
8051
Family Name
C8051F04x
Maximum Speed
25 MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
336-1205 - DEV KIT FOR F040/F041/F042/F043
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1204
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F040-GQ
Manufacturer:
SiliconL
Quantity:
702
Company:
Part Number:
C8051F040-GQ
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
Company:
Part Number:
C8051F040-GQR
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
Part Number:
C8051F040-GQR
Manufacturer:
SILICON LABS/芯科
Quantity:
20 000
14.2. External Oscillator Drive Circuit
The external oscillator circuit may drive an external crystal, ceramic resonator, capacitor, or RC network. A
CMOS clock may also provide a clock input. For a crystal or ceramic resonator configuration, the crystal/
resonator must be wired across the XTAL1 and XTAL2 pins as shown in Option 1 of Figure 14.1. In RC,
capacitor, or CMOS clock configuration, the clock source should be wired to the XTAL2 and/or XTAL1
pin(s) as shown in Option 2, 3, or 4 of Figure 14.1. The type of external oscillator must be selected in the
OSCXCN register, and the frequency control bits (XFCN) must be selected appropriately (see SFR Defini-
tion 14.4).
14.3. System Clock Selection
The CLKSL bit in register CLKSEL selects which oscillator is used as the system clock. CLKSL must be
set to ‘1’ for the system clock to run from the external oscillator; however the external oscillator may still
clock peripherals (timers, PCA) when the internal oscillator is selected as the system clock. The system
clock may be switched on-the-fly between the internal and external oscillator, so long as the selected oscil-
lator is enabled and has settled. The internal oscillator requires little start-up time and may be enabled and
selected as the system clock in the same write to OSCICN. External crystals and ceramic resonators typi-
cally require a start-up time before they are settled and ready for use as the system clock. The Crystal
Valid Flag (XTLVLD in register OSCXCN) is set to ‘1’ by hardware when the external oscillator is settled. To
avoid reading a false XTLVLD in crystal mode, software should delay at least 1 ms between enabling the
external oscillator and checking XTLVLD. RC and C modes typically require no startup time.
Calibrated Internal Oscillator
Frequency
Internal Oscillator Supply Current
(from V
External Clock Frequency
T
T
XCH
XCL
Bits7-1:
Bit0:
(External Clock Low Time)
(External Clock High Time)
Bit7
R
-
DD
)
Parameter
Reserved.
CLKSL: System Clock Source Select Bit.
0: SYSCLK derived from the Internal Oscillator, and scaled as per the IFCN bits in OSCICN.
1: SYSCLK derived from the External Oscillator circuit.
SFR Definition 14.3. CLKSEL: Oscillator Clock Selection
Table 14.1. Internal Oscillator Electrical Characteristics
Bit6
R
-
Bit5
R
-
–40 to +85 °C unless otherwise specified.
OSCICN.7 = 1
Bit4
R
-
Conditions
Rev. 1.5
Bit3
R
-
C8051F040/1/2/3/4/5/6/7
Bit2
R
-
Min
24
15
15
—
0
Bit1
R
-
24.5
Typ
450
—
—
—
SFR Address:
CLKSL
SFR Page:
R/W
Bit0
Max
25
30
—
—
—
0x97
F
00000000
Reset Value
Units
MHz
MHz
µA
ns
ns
175