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參數(shù)資料
型號： MC68HCP11A1VFN2
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, 2 MHz, MICROCONTROLLER, PQCC52
封裝： PLASTIC, LCC-52
文件頁數(shù)： 24/158頁
文件大小： 776K
代理商： MC68HCP11A1VFN2
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(guān)PDF資料
PDF描述
MC68HCP11A1VP2 HCMOS Single-Chip Microcontroller
MC68HC11A8VCFN2 HCMOS Single-Chip Microcontroller
MC68HC11A8VCFU2 HCMOS Single-Chip Microcontroller
MC68HC11A1VFU2 HCMOS Single-Chip Microcontroller
MC68HC11E0CB2 Microcontrollers
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HCP11E0CP2 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC68HCP11E0FN 功能描述:MICROCONTROLLER MCU 8ADC 3MHC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC11 標(biāo)準(zhǔn)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(shè)備:POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):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(shù)據(jù)轉(zhuǎn)換器:A/D 6x12b 振蕩器型:內(nèi)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
MC68HCP11E0FNE 功能描述:8位微控制器 -MCU 8B MCU 512RAM COP A/D RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
MC68HCP11E1CFNE2 功能描述:8位微控制器 -MCU 8B MCU 512 BYTES RAM RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
MC68HCP11E1CFNE3 功能描述:8位微控制器 -MCU 8B MCU 512 BYTES RAM RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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