參數(shù)資料
型號(hào): NS32FX200VF
廠商: National Semiconductor Corporation
英文描述: System Controller
中文描述: 系統(tǒng)控制器
文件頁數(shù): 27/94頁
文件大?。?/td> 955K
代理商: NS32FX200VF
2.0 Architecture
(Continued)
Printer Interrupt Generator
The Interrupt Control Unit dedicates one interrupt either to
the Strobes-Done pulse or to DMA channel 1. The Printer
Interrupt Source (PIS) bit of the TPHC register selects which
of the interrupt pulses is routed to the Interrupt Control Unit.
Temperature Sensing Circuit
A 6-bit A/D Converter (ADC) is implemented by a 6-bit
Pulse Width Modulation (PWM) based D/A convertor and
an analog comparator. The control loop of the ADC is exe-
cuted under software control. The total time for both PWM
based D/A conversion and for comparator settling is less
than 2 ms. The DAC must be initialized to 011111 at least
10 ms prior to the first reading of the comparator output.
TL/EE/11331–19
FIGURE 2-14. Temperature ADC
27
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