C8051F320 Silicon Laboratories Inc, C8051F320 Datasheet - Page 212

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C8051F320

Manufacturer Part Number
C8051F320
Description
IC 8051 MCU 16K FLASH 32LQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F32xr
Datasheet

Specifications of C8051F320

Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
25
Program Memory Size
16KB (16K 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 17x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-

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C8051F320/1
212
Bits 7-0: SCR7-SCR0: SPI0 Clock Rate.
Example: If SYSCLK = 2 MHz and SPI0CKR = 0x04,
f
SCK
f
SCR7
SCK
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.
for 0 <= SPI0CKR <= 255
200kHz
f
SCK
------------------------- -
2
2000000
×
SCR6
R/W
Bit6
(
=
4
+
------------------------------------------------ -
2
×
1
Figure 18.10. SPI0CKR: SPI0 Clock Rate Register
)
(
SPI0CKR
SCR5
SYSCLK
R/W
Bit5
SCR4
+
R/W
Bit4
1
)
Rev. 1.1
SCR3
R/W
Bit3
SCR2
R/W
Bit2
SCR1
R/W
Bit1
SFR Address: 0xA2
SCR0
R/W
Bit0
00000000
Reset Value

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