- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄45226 > MC68HC11A0CP2 (FREESCALE SEMICONDUCTOR INC) 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP48 PDF資料下載
參數(shù)資料
| 型號： | MC68HC11A0CP2 |
| 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)： | 72/158頁 |
| 文件大?。?/td> | 3803K |
| 代理商： | MC68HC11A0CP2 |
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頁當(dāng)前第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
SIGNAL DESCRIPTIONS AND OPERATING MODES
MC68HC11A8
2-4
TECHNICAL DATA
2
2.1.8 A/D Converter Reference Voltages (VRL, VRH)
These two inputs provide the reference voltages for the analog-to-digital converter cir-
cuitry.
2.1.9 Strobe B and Read/Write (STRB/R/W)
This signal acts as a strobe B output or as a data bus direction indicator depending on
the operating mode.
In single-chip operating mode, the STRB output acts as a programmable strobe for
handshake with other parallel l/O devices. Refer to 4 PARALLEL I/O for additional in-
formation.
In expanded multiplexed operating mode, R/W is used to control the direction of trans-
fers on the external data bus. A low on the R/W signal indicates data is being written
to the external data bus. A high on this signal indicates that a read cycle is in progress.
R/W will stay low during consecutive data bus write cycles, such as in a double-byte
store. The NAND of inverted R/W with the E clock should be used as the write enable
signal for an external static RAM.
2.1.10 Strobe A and Address Strobe (STRA/AS)
This signal acts as an edge detecting strobe A input or as an address strobe bus con-
trol output depending on the operating mode.
In single-chip operating mode, the STRA input acts as a programmable strobe for
handshake with other parallel l/O devices. Refer to 4 PARALLEL I/O for additional in-
formation.
In expanded multiplexed operating mode, the AS output is used to demultiplex the ad-
dress and data signals at port C. Refer to 2.2.2 Expanded Multiplexed Operating
Mode for additional information.
2.1.11 Port Signals
Ports A, D, and E signals are independent of the operating mode. Port B provides eight
general purpose output signals in single-chip operating modes and provides eight
high-order address signals when the microcontroller is in expanded multiplexed oper-
ating modes. Port C provides eight general purpose input/output signals when the mi-
crocontroller is in singlechip operating modes. When the microcontroller is in
expanded multiplexed operating modes, port C is used for a multiplexed address/data
bus. Table 2-2 shows a summary of the 40 port signals as they relate to the operating
modes. Unused inputs and l/O pins configured as inputs should be terminated high or
low.
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 |
|---|---|
| MC68HC11A8BCFN2 | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQCC52 |
| MC68HC11A8BVP2 | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP48 |
| MC68HC11A0CFN2 | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQCC52 |
| MC68HC11A1CFN3 | 8-BIT, MROM, 3 MHz, MICROCONTROLLER, PQCC52 |
| MC68HCP11A1CP2 | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP48 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC11A0CP3 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:HCMOS Single-Chip Microcontroller |
| MC68HC11A0FB | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers |
| MC68HC11A0FB1 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers |
| MC68HC11A0FB3 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers |
| MC68HC11A0FB4 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。