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參數資料
型號: MC68HC705BD3
廠商: Motorola, Inc.
英文描述: 8-Bit Microcontroller Units (MCU).(8位微控制器)
中文描述: 8位微控制器單元(MCU)。(8位微控制器)
文件頁數: 61/112頁
文件大小: 676K
代理商: MC68HC705BD3
MC68HC05BD3
MOTOROLA
8-1
SYNC SIGNAL PROCESSOR
8
8
SYNC SIGNAL PROCESSOR
The functions of the SSP include polarity correction, sync separation, sync pulse reshaper, sync
pulse detectors, horizontal line counter, vertical frequency counter, and free running signals
generator. In addition, interrupt can be generated for each vertical frame at a user specified
horizontal line number.
The processor accepts either composite or separate sync inputs.
For separate sync inputs, the HTTL and VTTL outputs are identical to the incoming horizontal sync
with negative sync polarity. As for composite sync input, reassembled horizontal sync pulses can
be inserted during the vertical sync period. The VTTL output is triggered by the leading edge of
the incoming vertical sync pulse, and the sync pulse will be widened by 9.5
μ
s.
Both HSYNC and VSYNC inputs have internal filter to improve noise immunity. Any pulse that is
shorter than an internal bus clock period, will be regarded as a glitch, and will be ignored.
Note:
All quoted timings in this section are based on the assumption that the internal bus
frequency is 2MHz, i.e. t
CYC
=0.5
μ
s.
8.1
Functional Blocks
The architecture of the Sync Signal Processor is shown in Figure 8-1. Each of the functional
blocks are described in the following paragraphs.
8.1.1
Polarity Correction
The polarity correction block of the sync signal processor accepts the input sync signals
(HSYNC/VSYNC) and converts them to negative polarity signals, regardless of the polarity of the
inputs. The following describes the methodologies used in polarity correction.
TPG
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相關代理商/技術參數
參數描述
MC68HC705BD3P 制造商:Motorola 功能描述:MOTOROLA NXC4C
MC68HC705BD7P1 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC68HC705C4ACP 制造商:Freescale Semiconductor 功能描述:
MC68HC705C8AB 功能描述:IC MCU 8K OTP 2.1MHZ 42-SDIP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:HC05 標準包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN,SCI,SPI 外圍設備:POR,PWM,溫度傳感器,WDT 輸入/輸出數:21 程序存儲器容量:40KB(20K x 16) 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數據轉換器:A/D 6x12b 振蕩器型:內部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
MC68HC705C8ACB 制造商:Rochester Electronics LLC 功能描述:HCO5 CORE + 8K RAM + EPR - Bulk
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