參數(shù)資料
型號： C8051F300DK
廠商： Silicon Laboratories Inc
文件頁數(shù)： 50/178頁
文件大?。?/td> 0K
描述： DEV KIT F300/301/302/303/304/305
標準包裝： 1
類型： MCU
適用于相關產(chǎn)品： Silicon Laboratories C8051 F300/001/002
所含物品： 評估板，電源，USB 線纜，適配器和文檔
產(chǎn)品目錄頁面： 626 (CN2011-ZH PDF)
相關產(chǎn)品： 336-1535-5-ND - IC 8051 MCU 8K FLASH 14-SOIC
C8051F300-GMR-ND - IC 8051 MCU 8K FLASH 11QFN
C8051F002-GQR-ND - IC 8051 MCU 32K FLASH 32LQFP
C8051F001-GQR-ND - IC 8051 MCU 32K FLASH 48TQFP
336-1245-ND - IC 8051 MCU 8K FLASH 11QFN
336-1186-ND - IC 8051 MCU 32K FLASH 32LQFP
336-1185-ND - IC 8051 MCU 32K FLASH 48TQFP
其它名稱： 336-1246
Rev. 2.9
143
C8051F300/1/2/3/4/5
15. Timers
Each MCU includes 3 counter/timers: two are 16-bit counter/timers compatible with those found in the
standard 8051, and one is a 16-bit auto-reload timer for use with the ADC, SMBus, or for general purpose
use. These timers can be used to measure time intervals, count external events and generate periodic
interrupt requests. Timer 0 and Timer 1 are nearly identical and have four primary modes of operation.
Timer 2 offers 16-bit and split 8-bit timer functionality with auto-reload.
Timer 0 and Timer 1 Modes:
Timer 2 Modes:
13-bit counter/timer
16-bit timer with auto-reload
16-bit counter/timer
8-bit counter/timer with auto-reload
Two 8-bit timers with auto-reload
Two 8-bit counter/timers (Timer 0 only)
Timers 0 and 1 may be clocked by one of five sources, determined by the Timer Mode Select bits
(T1M–T0M) and the Clock Scale bits (SCA1–SCA0). The Clock Scale bits define a pre-scaled clock from
which Timer 0 and/or Timer 1 may be clocked (See SFR Definition 15.3 for pre-scaled clock selection).
Timer 0/1 may then be configured to use this pre-scaled clock signal or the system clock. Timer 2 may be
clocked by the system clock, the system clock divided by 12, or the external oscillator clock source divided
by 8.
Timer 0 and Timer 1 may also be operated as counters. When functioning as a counter, a counter/timer
register is incremented on each high-to-low transition at the selected input pin. Events with a frequency of
up to one-fourth the system clock's frequency can be counted. The input signal need not be periodic, but it
should be held at a given level for at least two full system clock cycles to ensure the level is properly sam-
pled.
15.1. Timer 0 and Timer 1
Each timer is implemented as 16-bit register accessed as two separate bytes: a low byte (TL0 or TL1) and
a high byte (TH0 or TH1). The Counter/Timer Control register (TCON) is used to enable Timer 0 and Timer
1 as well as indicate their status. Timer 0 interrupts can be enabled by setting the ET0 bit in the IE register
setting the ET1 bit in the IE register (Section 8.3.5). Both counter/timers operate in one of four primary
modes selected by setting the Mode Select bits T1M1–T0M0 in the Counter/Timer Mode register (TMOD).
Each timer can be configured independently. Each operating mode is described below.
15.1.1. Mode 0: 13-bit Counter/Timer
Timer 0 and Timer 1 operate as 13-bit counter/timers in Mode 0. The following describes the configuration
and operation of Timer 0. However, both timers operate identically, and Timer 1 is configured in the same
manner as described for Timer 0.
The TH0 register holds the eight MSBs of the 13-bit counter/timer. TL0 holds the five LSBs in bit positions
TL0.4-TL0.0. The three upper bits of TL0 (TL0.7-TL0.5) are indeterminate and should be masked out or
ignored when reading. As the 13-bit timer register increments and overflows from 0x1FFF (all ones) to
0x0000, the timer overflow flag TF0 (TCON.5) is set and an interrupt will occur if Timer 0 interrupts are
enabled.
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參數(shù)描述
C8051F300DK-A 功能描述:DEV KIT FOR F300/301/302/304/305 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 過時/停產(chǎn)零件編號 系列:- 標準包裝:1 系列:- 類型:MCU 適用于相關產(chǎn)品:Freescale MC68HC908LJ/LK（80-QFP ZIF 插口） 所含物品:面板、纜線、軟件、數(shù)據(jù)表和用戶手冊 其它名稱:520-1035
C8051F300DK-B 功能描述:DEV KIT FOR F300/301/302/304/305 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 過時/停產(chǎn)零件編號 系列:- 標準包裝:1 系列:- 類型:MCU 適用于相關產(chǎn)品:Freescale MC68HC908LJ/LK（80-QFP ZIF 插口） 所含物品:面板、纜線、軟件、數(shù)據(jù)表和用戶手冊 其它名稱:520-1035
C8051F300DK-E 功能描述:DEV KIT FOR F300/301/302/304/305 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 過時/停產(chǎn)零件編號 系列:- 標準包裝:1 系列:- 類型:MCU 適用于相關產(chǎn)品:Freescale MC68HC908LJ/LK（80-QFP ZIF 插口） 所含物品:面板、纜線、軟件、數(shù)據(jù)表和用戶手冊 其它名稱:520-1035
C8051F300DK-G 功能描述:8位微控制器 -MCU MCU DEVELOPMENT KIT W/ GLOBAL POWER SPLY RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
C8051F300DK-H 功能描述:DEV KIT FOR F300/301/302/304/305 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 過時/停產(chǎn)零件編號 系列:- 標準包裝:1 系列:- 類型:MCU 適用于相關產(chǎn)品:Freescale MC68HC908LJ/LK（80-QFP ZIF 插口） 所含物品:面板、纜線、軟件、數(shù)據(jù)表和用戶手冊 其它名稱:520-1035
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