- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄45226 > MC68HC11A8BMP2 (FREESCALE SEMICONDUCTOR INC) 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP48 PDF資料下載
參數(shù)資料
| 型號： | MC68HC11A8BMP2 |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP48 |
| 封裝： | PLASTIC, DIP-48 |
| 文件頁數(shù)： | 84/158頁 |
| 文件大?。?/td> | 3803K |
| 代理商： | MC68HC11A8BMP2 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁當(dāng)前第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁第139頁第140頁第141頁第142頁第143頁第144頁第145頁第146頁第147頁第148頁第149頁第150頁第151頁第152頁第153頁第154頁第155頁第156頁第157頁第158頁
ON-CHIP MEMORY
MOTOROLA
TECHNICAL DATA
3-5
3
Note that if the RAM is relocated to either $E000 or $F000, which is in conflict with the
internal ROM, (no conflict if the ROMON bit in the configuration register is zero), RAM
will take priority and the conflicting ROM will become inaccessible. Also, if the 64 con-
trol registers are relocated so that they conflict with the RAM and/or ROM, then the 64
control registers take priority and the RAM and/or ROM at those locations become in-
accessible. No harmful conflicts result, the lower priority resources simply become in-
accessible. Similarly, if an internal resource conflicts with an external device no
harmful conflict results. Data from the external device will not be applied to the internal
data bus and cannot interfere with the internal read.
Note that there are unused register locations in the 64 byte control register block.
Reads of these unused registers will return data from the undriven internal data bus
and not from another resource that happens to be located at the same address.
3.3 ROM
The internal 8K ROM occupies the highest 8K of the memory map ($E000–$FFFF).
This ROM is disabled when the ROMON bit in the CONFIG register is clear. The
ROMON bit is implemented with an EEPROM cell and is programmed using the same
procedures for programming the on-chip EEPROM. For further information refer to
In the single-chip operating mode, internal ROM is enabled regardless of the state of
the ROMON bit.
There is also a 192 byte mask programmed boot ROM in the MC68HC11A8. This
bootstrap program ROM controls the operation of the special bootstrap operating
mode and is only enabled following reset in the special bootstrap operating mode. For
more information refer to 2.2.3 Special Bootstrap Operating Mode.
3.4 RAM
The 256 byte internal RAM may be relocated during initialization by writing to the INIT
register. The reset default position is $0000 through $00FF. This RAM is implemented
with static cells and retains its contents during the WAIT and STOP modes.
The contents of the 256-byte RAM can also be retained by supplying a low current
backup power source to the MODB/VSTBY pin. When using a standby power source,
VDD may be removed; however, RESET must go low before VDD is removed and re-
main low until VDD has been restored.
3.5 EEPROM
The 512 bytes of EEPROM are located at $B600 through $B7FF and have the same
read cycle time as the internal ROM. The write (or programming) mechanism for the
EEPROM is controlled by the PPROG register. The EEPROM is disabled when the
EEON bit in the CONFIG register is zero. The EEON bit is implemented with an EE-
PROM cell.
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
..
.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC68HC11A0CFU2 | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQFP64 |
| MC68HC11A0CP2 | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP48 |
| MC68HC11A8BCFN2 | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQCC52 |
| MC68HC11A8BVP2 | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP48 |
| MC68HC11A0CFN2 | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQCC52 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC11A8BVP2 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:HCMOS Single-Chip Microcontroller |
| MC68HC11A8FN | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:8-Bit Microcontrollers |
| MC68HC11A8FN1 | 制造商:Motorola Inc 功能描述: |
| MC68HC11A8MCFN2 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:HCMOS Single-Chip Microcontroller |
| MC68HC11A8P1 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。