參數(shù)資料
型號: C8051F000-TB
廠商: Silicon Laboratories Inc
文件頁數(shù): 62/171頁
文件大?。?/td> 0K
描述: BOARD PROTOTYPING W/C8051F000
標準包裝: 1
C8051F000/1/2/5/6/7
C8051F010/1/2/5/6/7
20. PROGRAMMABLE COUNTER ARRAY
The Programmable Counter Array (PCA) provides enhanced timer functionality while requiring less CPU
intervention than the standard 8051 counter/timers. The PCA consists of a dedicated 16-bit counter/timer and five
16-bit capture/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 Section 15.1 for details on configuring the Crossbar).
The counter/timer is driven by a configurable timebase that can select between four inputs as its source: system
clock divided by twelve, system clock divided by four, Timer 0 overflow, or an external clock signal on the ECI
line. The PCA is configured and controlled through the system controller’s Special Function Registers. The basic
PCA block diagram is shown in Figure 20.1.
Figure 20.1. PCA Block Diagram
16-Bit Counter/Timer
Capture/Compare
Module 1
Capture/Compare
Module 0
Capture/Compare
Module 2
Capture/Compare
Module 3
Capture/Compare
Module 4
CEX1
System
Clock
/4
T0 Overflow
ECI
Crossbar
CEX2
CEX3
CEX4
CEX0
Port I/O
/12
00
01
10
CPS=11
Rev. 1.7
154
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C8051F001-GQ 功能描述:8位微控制器 -MCU 32KB 12ADC 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
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