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

參數資料
型號: MC68HC11A8VCFU2
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: HCMOS Single-Chip Microcontroller
中文描述: 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQFP64
封裝: QFP-64
文件頁數: 24/158頁
文件大小: 776K
代理商: MC68HC11A8VCFU2
MOTOROLA
2-8
SIGNAL DESCRIPTIONS AND OPERATING MODES
MC68HC11A8
TECHNICAL DATA
2
Figure 2-4 Address/Data Demultiplexing
2.2.3 Special Bootstrap Operating Mode
The bootstrap mode is considered a special operating mode as distinguished from the
normal single-chip operating mode. This is a very versatile operating mode since there
are essentially no limitations on the special purpose program that can be loaded into
the internal RAM. The boot loader program is contained in the 192 byte bootstrap
ROM. This ROM is enabled only if the MCU is reset in special bootstrap operating
mode, and appears as internal memory space at locations $BF40-$BFFF. The boot
loader program will use the SCI to read a 256 byte program into on-chip RAM at loca-
tions $0000-$00FF. After the character for address $00FF is received, control is auto-
matically passed to that program at location $0000.
The MC68HC11A8 communicates through the SCI port. After reset in special boot-
strap operating mode, the SCI is running at E clock/16 (7812 baud for E clock equal 2
MHz). If the security feature was specified and the security bit is set, $FF is output by
the SCI transmitter. The EEPROM is then erased. If erasure is unsuccessful, $FF is
output again and erasure is attempted again. Upon successful erasure of the EE-
PROM, all internal RAM is written over with $FF. The CONFIG register is then erased.
The boot loader program now proceeds as though the part had not been in security
mode.
HC373
MC68HC11A8
ADDR/DATA DEMUX
A13
A12
A11
A10
A9
A8
A14
A5
A4
A3
A2
A1
A0
A6
D5
D4
D3
D2
D1
D0
D6
D2
D3
D4
D5
D6
D7
D8
LE
D1
Q3
Q4
Q5
Q6
Q7
Q8
OE
Q2
PC5/A5/D5
PC4/A4/D4
PC3/A3/D3
PC2/A2/D2
PC1/A1/D1
PC0/A0/D0
PC6/A6/D6
AS
PB5/A13
PB4/A12
PB3/A11
PB2/A10
PB1/A9
PB0/A8
PB6/A14
R/W
E
WE
相關PDF資料
PDF描述
MC68HC11A1VFU2 HCMOS Single-Chip Microcontroller
MC68HC11E0CB2 Microcontrollers
MC68S711E9CFN2 Microcontrollers
MC68HC711E20FS3 Microcontrollers
MC68L11E20FU2 Microcontrollers
相關代理商/技術參數
參數描述
MC68HC11AOFNR2 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Motorola Inc 功能描述: 制造商:MOTOROLA 功能描述:
MC68HC11AX 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:8-Bit Microcontrollers
MC68HC11C0 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:8-Bit Microcontroller
MC68HC11C0CFN2 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:8-Bit Microcontroller
MC68HC11C0CFN3 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:8-Bit Microcontroller
主站蜘蛛池模板: 深州市| 昔阳县| 女性| 凌海市| 方城县| 阜平县| 闻喜县| 务川| 揭东县| 高阳县| 来宾市| 固始县| 阳曲县| 兴海县| 钦州市| 敖汉旗| 青神县| 青阳县| 澎湖县| 毕节市| 金门县| 旬阳县| 林口县| 通州市| 咸宁市| 治多县| 鄂温| 奇台县| 义乌市| 翁源县| 外汇| 肇庆市| 宝丰县| 湖北省| 林口县| 额尔古纳市| 分宜县| 聂拉木县| 乐东| 洮南市| 清涧县|