C8051F321-GM Silicon Laboratories Inc, C8051F321-GM Datasheet - Page 235
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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
20.
The Programmable Counter Array (PCA0) provides enhanced timer functionality while requiring less CPU interven-
tion than the standard 8051 counter/timers. The PCA consists of a dedicated 16-bit counter/timer and five 16-bit cap-
ture/compare modules. Each capture/compare module has its own associated I/O line (CEXn) which is routed
through the Crossbar to Port I/O when enabled (See
details on configuring the Crossbar). The counter/timer is driven by a programmable timebase that can select between
six sources: system clock, system clock divided by four, system clock divided by twelve, the external oscillator clock
source divided by 8, Timer 0 overflow, or an external clock signal on the ECI input pin. Each capture/compare mod-
ule may be configured to operate independently in one of six modes: Edge-Triggered Capture, Software Timer, High-
Speed Output, Frequency Output, 8-Bit PWM, or 16-Bit PWM (each mode is described in
Compare Modules” on page
ity, allowing the PCA to be clocked by a precision external oscillator while the internal oscillator drives the system
clock. The PCA is configured and controlled through the system controller's Special Function Registers. The PCA
block diagram is shown in Figure 20.1
Important Note: The PCA Module 4 may be used as a watchdog timer (WDT), and is enabled in this mode follow-
ing a system reset. Access to certain PCA registers is restricted while WDT mode is enabled. See
details.
PROGRAMMABLE COUNTER ARRAY (PCA0)
Capture/Compare
Module 0
SYSCLK/12
Timer 0 Overflow
SYSCLK
External Clock/8
SYSCLK/4
ECI
237). The external oscillator clock option is ideal for real-time clock (RTC) functional-
Capture/Compare
Module 1
CLOCK
MUX
PCA
Crossbar
16-Bit Counter/Timer
Port I/O
Section “14.1. Priority Crossbar Decoder” on page 129
Capture/Compare
Figure 20.1. PCA Block Diagram
Rev. 1.1
Module 2
Capture/Compare
Module 3
C8051F320/1
Section “20.2. Capture/
Capture/Compare
Module 4 / WDT
Section 20.3
235
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