C8051F044-GQR Silicon Laboratories Inc, C8051F044-GQR Datasheet - Page 263
C8051F044-GQR
Manufacturer Part Number
C8051F044-GQR
Description
IC 8051 MCU 64K FLASH 100TQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F04xr
Specifications of C8051F044-GQR
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
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Ram Size
4.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 13x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F044-GQR
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
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Bits 7-0: SCR7-SCR0: SPI0 Clock Rate
Example: If SYSCLK = 2 MHz and SPI0CKR = 0x04,
SCR7
R/W
Bit7
These bits determine the frequency of the SCK output when the SPI0 module is configured
for master mode operation. The SCK clock frequency is a divided version of the system
clock, and is given in the following equation, where SYSCLK is the system clock frequency
and SPI0CKR is the 8-bit value held in the SPI0CKR register.
f
for 0 <= SPI0CKR <= 255
f
SCK
f
SCK
SCK
SCR6
R/W
Bit6
=
=
=
------------------------------------------------ -
2
200kHz
------------------------- -
2
2000000
SFR Definition 20.3. SPI0CKR: SPI0 Clock Rate
SPI0CKR
SCR5
SYSCLK
4
R/W
Bit5
+
1
SCR4
+
R/W
Bit4
1
SCR3
Rev. 1.5
R/W
Bit3
C8051F040/1/2/3/4/5/6/7
SCR2
R/W
Bit2
SCR1
R/W
Bit1
SFR Address:
SCR0
SFR Page:
R/W
Bit0
0x9D
0
00000000
Reset Value
263
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