C8051F321-GM Silicon Laboratories Inc, C8051F321-GM Datasheet - Page 21
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C8051F321-GM
Manufacturer Part Number
C8051F321-GM
Description
IC 8051 MCU 16K FLASH 28MLP
Manufacturer
Silicon Laboratories Inc
Series
C8051F32xr
Datasheets
1.C8051F320-TB.pdf
(250 pages)
2.C8051F321-GMR.pdf
(2 pages)
3.C8051F321-GM.pdf
(256 pages)
Specifications of C8051F321-GM
Program Memory Type
FLASH
Program Memory Size
16KB (16K x 8)
Package / Case
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
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
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
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
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
C8051F320DK
Minimum Operating Temperature
- 40 C
On-chip Adc
13-ch x 10-bit or 17-ch x 10-bit
No. Of I/o's
21
Ram Memory Size
1280Byte
Cpu Speed
25MHz
No. Of Timers
4
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
336-1480 - DAUGHTER CARD TOOLSTCK C8051F321770-1006 - ISP 4PORT FOR SILABS C8051F MCU336-1449 - ADAPTER PROGRAM TOOLSTICK F321336-1260 - DEV KIT FOR C8051F320/F321
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1261
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F321-GM
Manufacturer:
SiliconL
Quantity:
4 364
Part Number:
C8051F321-GM
Manufacturer:
SILICON LABS/芯科
Quantity:
20 000
Part Number:
C8051F321-GMR
Manufacturer:
SILICON LABS/芯科
Quantity:
20 000
1.1.3. Additional Features
The C8051F320/1 SoC family includes several key enhancements to the CIP-51 core and peripherals to improve per-
formance and ease of use in end applications.
The extended interrupt handler provides 16 interrupt sources into the CIP-51 (as opposed to 7 for the standard 8051),
allowing numerous analog and digital peripherals to interrupt the controller. An interrupt driven system requires less
intervention by the MCU, giving it more effective throughput. The extra interrupt sources are very useful when build-
ing multi-tasking, real-time systems.
Nine reset sources are available: power-on reset circuitry (POR), an on-chip VDD monitor (forces reset when power
supply voltage drops below V
transition), a Watchdog Timer, a Missing Clock Detector, a voltage level detection from Comparator0, a forced soft-
ware reset, an external reset pin, and an errant FLASH read/write protection circuit. Each reset source except for the
POR, Reset Input Pin, or FLASH error may be disabled by the user in software. The WDT may be permanently
enabled in software after a power-on reset during MCU initialization.
The internal oscillator is factory calibrated to 12 MHz ±1.5%, and the internal oscillator period may be user pro-
grammed in ~0.25% increments. A clock recovery mechanism allows the internal oscillator to be used with the 4x
Clock Multiplier as the USB clock source in Full Speed mode; the internal oscillator can also be used as the USB
clock source in Low Speed mode. External oscillators may also be used with the 4x Clock Multiplier. An external
oscillator drive circuit is also included, allowing an external crystal, ceramic resonator, capacitor, RC, or CMOS
clock source to generate the system clock. The system clock may be configured to use the internal oscillator, external
oscillator, or the Clock Multiplier output divided by 2. If desired, the system clock source may be switched on-the-fly
between oscillator sources. An external oscillator can be extremely useful in low power applications, allowing the
MCU to run from a slow (power saving) external clock source, while periodically switching to the internal oscillator
as needed.
XTAL1
XTAL2
Oscillator
Oscillator
Multiplier
External
Internal
Clock
Drive
Px.x
Px.x
RST
as given in Table 10.1 on page 105), the USB controller (USB bus reset or a VBUS
System
Clock
Clock Select
Figure 1.4. On-Chip Clock and Reset
Comparator 0
+
-
Detector
Missing
Clock
(one-
shot)
Microcontroller
EN
Extended Interrupt
C0RSEF
CIP-51
Core
Handler
VDD
WDT
PCA
EN
Supply
Monitor
+
-
System Reset
Rev. 1.1
Enable
Software Reset (SWRSF)
Power On
Reset
Operation
FLASH
Errant
Controller
'0'
USB
(wired-OR)
C8051F320/1
Transition
VBUS
Reset
Funnel
/RST
21