- 您现在的位置：买卖IC网 > PDF目录132980 > MC68HC11D0CP3 (MOTOROLA INC) 8-BIT, MROM, 3 MHz, MICROCONTROLLER, PDIP40 PDF资料下载
参数资料
| 型号： | MC68HC11D0CP3 |
| 厂商： | MOTOROLA INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 3 MHz, MICROCONTROLLER, PDIP40 |
| 封装： | PLASTIC, DIP-40 |
| 文件页数： | 34/124页 |
| 文件大小： | 1481K |
| 代理商： | MC68HC11D0CP3 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页当前第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页
MC68HC11D3
PIN DESCRIPTIONS
MOTOROLA
TECHNICAL DATA
2-5
sensitive, it can be connected to a multiple-source wired-OR network with an external
pullup resistor to VDD. XIRQ is often used as a power loss detect interrupt.
Whenever XIRQ or IRQ are used with multiple interrupt sources (IRQ must be config-
ured for level-sensitive operation if there is more than one source of IRQ interrupt),
each source must drive the interrupt input with an open-drain type of driver to avoid
contention between outputs. There should be a single pullup resistor near the MCU
interrupt input pin (typically 4.7 k
). There must also be an interlock mechanism at
each interrupt source so that the source holds the interrupt line low until the MCU rec-
ognizes and acknowledges the interrupt request. If one or more interrupt sources are
still pending after the MCU services a request, the interrupt line will still be held low
and the MCU will be interrupted again as soon as the interrupt mask bit in the MCU is
cleared (normally upon return from an interrupt). Refer to SECTION 5 RESETS AND
2.7 MODA and MODB (MODA/LIR,and MODB/VSTBY)
During reset, MODA and MODB select one of the four operating modes. Refer to SEC-
After the operating mode has been selected, the LIR pin provides an open-drain output
to indicate that execution of an instruction has begun. A series of E-clock cycles occurs
during execution of each instruction. The LIR signal goes low during the first E-clock
cycle of each instruction (opcode fetch). This output is provided for assistance in pro-
gram debugging.
The VSTBY pin is used to input RAM standby power. When the voltage on this pin is
more than one MOS threshold (about 0.7 volts) above the VDD voltage, the internal
192-byte RAM and part of the reset logic are powered from this signal rather than the
VDD input. This allows RAM contents to be retained without VDD power applied to the
MCU. Reset must be driven low before VDD is removed and must remain low until VDD
has been restored to a valid level.
2.8 PD6/AS
This pin performs either of two separate functions, depending on the operating mode.
In single-chip and bootstrap modes, the pin functions as input/output port D bit 6. In
the expanded multiplexed and test modes, it provides an address strobe (AS) function.
The AS can demultiplex the address and data signals at port C. Refer to SECTION 4
OPERATING MODES AND ON-CHIP MEMORY for further information.
2.9 PD7/R/W
This pin provides two separate functions, depending on the operating mode. In single-
chip and bootstrap modes, PD7/R/W acts as input/output port D bit 7. Refer to SEC-
TION 6 PARALLEL I/O for further information.
In expanded multiplexed and test modes, PD7/R/W performs a read/write function.
PD7/R/W controls the direction of transfers on the external data bus. A high on this pin
indicates that a read cycle is in progress.
相关PDF资料 |
PDF描述 |
|---|---|
| MPC8264ACZUMIBX | 32-BIT, 266 MHz, RISC PROCESSOR, PBGA480 |
| MT5TL4L32T-70IT | SPECIALTY MICROPROCESSOR CIRCUIT, PQFP100 |
| MT5TL4L32T-90IT | SPECIALTY MICROPROCESSOR CIRCUIT, PQFP100 |
| MB90F546GSPFV | 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP100 |
| MB90W234ZFV | 16-BIT, UVPROM, 16 MHz, MICROCONTROLLER, CQFP100 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MC68HC11D0FB | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller |
| MC68HC11D0FN | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller |
| MC68HC11D0FNR2 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller |
| MC68HC11D0P | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller |
| MC68HC11D3 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:8-channel, 8-bit analog-to-digital (A/D) converter |
发布紧急采购，3分钟左右您将得到回复。