欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數(shù)資料
型號: MC68B912B32FU8
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 16-Bit Microcontroller
中文描述: 16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP80
封裝: QFP-80
文件頁數(shù): 118/128頁
文件大小: 748K
代理商: MC68B912B32FU8
MOTOROLA
118
MC68HC912B32
MC68HC912B32TS/D
Figure 29 BDM Target to Host Serial Bit Timing (Logic 0)
Figure 29
shows the host receiving a logic zero from the target MC68HC912B32 MCU. Since the host
is asynchronous to the target MCU, there is a 0-to-1 cycle delay from the host-generated falling edge
on BKGD to the start of the bit time as perceived by the target MCU. The host initiates the bit time but
the target MC68HC912B32 finishes it. Since the target wants the host to receive a logic zero, it drives
the BKGD pin low for 13 E-clock cycles, then briefly drives it high to speed up the rising edge. The host
samples the bit level about ten cycles after starting the bit time.
16.2.3 BDM Commands
All BDM command opcodes are eight bits long, and can be followed by an address and/or data, as in-
dicated by the instruction. These commands do not require the CPU to be in active BDM mode for ex-
ecution.
The host controller must wait 150 cycles for a non-intrusive BDM command to execute before another
command can be sent. This delay includes 128 cycles for the maximum delay for a dead cycle. For data
read commands, the host must insert this delay between sending the address and attempting to read
the data.
BDM logic retains control of the internal buses until a read or write is completed. If an operation can be
completed in a single cycle, it does not intrude on normal CPU operation. However, if an operation re-
quires multiple cycles, CPU clocks are frozen until the operation is complete.
10 CYCLES
E CLOCK
(TARGET
MCU)
EARLIEST
START OF
NEXT BIT
BKGD PIN
PERCEIVED
START OF BIT TIME
10 CYCLES
HOST SAMPLES
BKGD PIN
HOST
DRIVE TO
BKGD PIN
TARGET MCU
DRIVE AND
SPEEDUP PULSE
HIGH-IMPEDANCE
SPEEDUP PULSE
HC12A4 BDM TARGET TO HOST TIM 0
相關(guān)PDF資料
PDF描述
MC68C912B32CFU8 16-Bit Microcontroller
MC68CK338 Highly Integrated, Low-Power, 32-Bit Microcontroller
MC68EC060 32-Bit Microprocessors.(32位微處理器)
MC68EN360RC25V QUad Integrated Communications Controller Users Manual
MC68EN360CFE25 QUad Integrated Communications Controller Users Manual
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68BOOL 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:8-BIT MICROPROCESSING UNIT (MPU)
MC68BOOP 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:8-BIT MICROPROCESSING UNIT (MPU)
MC68BOOS 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:8-BIT MICROPROCESSING UNIT (MPU)
MC68C812A4 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Technical Supplement MC68C812A4 3.3V Electrical Characteristics
MC68C912B32CFU8 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:16-Bit Microcontroller
主站蜘蛛池模板: 遂昌县| 金昌市| 桃园县| 绩溪县| 会宁县| 肥城市| 贵溪市| 石狮市| 龙海市| 和静县| 盐亭县| 辉南县| 华池县| 建德市| 贵阳市| 临海市| 长子县| 班戈县| 闻喜县| 阳山县| 社会| 庆元县| 万载县| 苍梧县| 镇安县| 双城市| 乌拉特后旗| 莲花县| 安溪县| 阿荣旗| 抚顺市| 崇礼县| 乌什县| 韩城市| 张北县| 永兴县| 于都县| 乌兰县| 莱阳市| 察哈| 襄樊市|