參數(shù)資料
型號: AT89C5131A-PUTIM
廠商: Atmel
文件頁數(shù): 131/176頁
文件大?。?/td> 0K
描述: IC 8051 MCU FLASH 32K USB 32QFN
標準包裝: 260
系列: AT89C513x
核心處理器: C52X2
芯體尺寸: 8-位
速度: 48MHz
連通性: I²C,SPI,UART/USART,USB
外圍設(shè)備: LED,POR,PWM,WDT
輸入/輸出數(shù): 18
程序存儲器容量: 32KB(32K x 8)
程序存儲器類型: 閃存
EEPROM 大小: 4K x 8
RAM 容量: 1.25K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 32-VQFN 裸露焊盤
包裝: 托盤
配用: AT89STK-10-ND - KIT EVAL APPL MASS STORAGE
AT89STK-05-ND - KIT STARTER FOR AT89C5131
57
AT89C5131
4136C–USB–04/05
The watchdog timer function is implemented in module 4 (See Figure 28).
The PCA interrupt system is shown in Figure 26.
Figure 26. PCA Interrupt System
PCA Modules: each one of the five compare/capture modules has six possible func-
tions. It can perform:
16-bit capture, positive-edge triggered
16-bit capture, negative-edge triggered
16-bit capture, both positive and negative-edge triggered
16-bit Software Timer
16-bit High-speed Output
8-bit Pulse Width Modulator
In addition, module 4 can be used as a Watchdog Timer.
Each module in the PCA has a special function register associated with it. These regis-
ters are: CCAPM0 for module 0, CCAPM1 for module 1, etc. (see Table 51). The
registers contain the bits that control the mode that each module will operate in.
The ECCF bit (CCAPMn.0 where n = 0, 1, 2, 3, or 4 depending on the module)
enables the CCF flag in the CCON SFR to generate an interrupt when a match or
compare occurs in the associated module.
PWM (CCAPMn.1) enables the pulse width modulation mode.
The TOG bit (CCAPMn.2) when set causes the CEX output associated with the
module to toggle when there is a match between the PCA counter and the module's
capture/compare register.
The match bit MAT (CCAPMn.3) when set will cause the CCFn bit in the CCON
register to be set when there is a match between the PCA counter and the module's
capture/compare register.
The next two bits CAPN (CCAPMn.4) and CAPP (CCAPMn.5) determine the edge
that a capture input will be active on. The CAPN bit enables the negative edge, and
CF
CR
CCON
0xD8
CCF4 CCF3
CCF2
CCF1
CCF0
Module 4
Module 3
Module 2
Module 1
Module 0
ECF
PCA Timer/Counter
ECCFn CCAPMn.0
CMOD.0
IE.6
IE.7
To Interrupt
priority decoder
EC
EA
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