C8051F005 Silicon Laboratories Inc, C8051F005 Datasheet - Page 129

• Manufacturer Part Number: C8051F005
• Description: IC 8051 MCU 32K FLASH 64TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F00xr

Specifications of C8051F005

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 32
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x12b, D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

129
C8051F000/1/2/5/6/7
C8051F010/1/2/5/6/7
Bits7-0: SCR7-SCR0: SPI Clock Rate
Bits7-0: SPI0DAT: SPI0 Transmit and Receive Data.
SCR7
R/W
R/W
Bit7
Bit7
These bits determine the frequency of the SCK output when the SPI module is
configured for master mode operation. The SCK clock frequency is a divided down
version of the system clock, and is given in the following equations:
f
The SPI0DAT register is used to transmit and receive SPI data. Writing data to SPI0DAT
places the data immediately into the shift register and initiates a transfer when in Master
Mode. A read of SPI0DAT returns the contents of the receive buffer.
SCK
= 0.5 * f
SCR6
R/W
R/W
Bit6
Bit6
SYSCLK
Figure 17.7. SPI0CKR: SPI Clock Rate Register
SCR5
Figure 17.8. SPI0DAT: SPI Data Register
R/W
R/W
Bit5
Bit5
/ (SPI0CKR + 1),
SCR4
R/W
R/W
Bit4
Bit4
Rev. 1.7
SCR3
R/W
R/W
Bit3
Bit3
for 0  SPI0CKR  255,
SCR2
R/W
R/W
Bit2
Bit2
SCR1
R/W
R/W
Bit1
Bit1
SCR0
R/W
R/W
Bit0
Bit0
SFR Address:
SFR Address:
Reset Value
Reset Value
00000000
00000000
0x9D
0x9B