C8051F321-GMR Silicon Laboratories Inc, C8051F321-GMR Datasheet - Page 205
C8051F321-GMR
Manufacturer Part Number
C8051F321-GMR
Description
IC 8051 MCU 16K FLASH 28MLP
Manufacturer
Silicon Laboratories Inc
Series
C8051F32xr
Specifications of C8051F321-GMR
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
21
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 13x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
Processor Series
C8051F3x
Core
8051
Data Bus Width
8 bit
Data Ram Size
2.25 KB
Interface Type
I2C, SMBus, SPI, UART, USB
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
21
Number Of Timers
4
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Development Tools By Supplier
C8051F320DK
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 13 Channel / 10 bit, 7 Channel
Package
28MLP
Device Core
8051
Family Name
C8051F321
Maximum Speed
25 MHz
Operating Supply Voltage
3.3 V
For Use With
336-1480 - DAUGHTER CARD TOOLSTCK C8051F321336-1449 - ADAPTER PROGRAM TOOLSTICK F321336-1260 - DEV KIT FOR C8051F320/F321
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
C8051F321-GMR
Manufacturer:
SILICON LABS/芯科
Quantity:
20 000
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Bits 7–0: SPI0DAT: SPI0 Transmit and Receive Data.
Bits 7–0: SCR7-SCR0: SPI0 Clock Rate.
Example: If SYSCLK = 2 MHz and SPI0CKR = 0x04,
f
SCK
SCR7
f
R/W
Bit7
R/W
SCK
Bit7
=
=
The SPI0DAT register is used to transmit and receive SPI0 data. Writing data to SPI0DAT
places the data into the transmit buffer and initiates a transfer when in Master Mode. A read
of SPI0DAT returns the contents of the receive buffer.
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
R/W
Bit6
=
4
SFR Definition 18.4. SPI0DAT: SPI0 Data Register
+
------------------------------------------------ -
2
SFR Definition 18.3. SPI0CKR: SPI0 Clock Rate
1
SCR5
SPI0CKR
SYSCLK
R/W
Bit5
R/W
Bit5
SCR4
R/W
+
Bit4
R/W
Bit4
1
Rev. 1.4
SCR3
R/W
R/W
Bit3
Bit3
SCR2
R/W
R/W
Bit2
Bit2
SCR1
R/W
Bit1
R/W
Bit1
C8051F320/1
SFR Address: 0xA2
SCR0
R/W
R/W
Address:
Bit0
Bit0
SFR
0xA3
00000000
00000000
Reset Value
Reset Value
205
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