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參數(shù)資料
| 型號(hào)： | MC9S12H256VPVR2 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP112 |
| 封裝： | LQFP-112 |
| 文件頁(yè)數(shù)： | 97/131頁(yè) |
| 文件大小： | 2133K |
| 代理商： | MC9S12H256VPVR2 |
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MC9S12H256 Device User Guide — V01.16
68
If an internal access is made while E, R/W, and LSTRB are configured as bus control outputs and internal
visibility is off (IVIS=0), E will remain low for the cycle, R/W will remain high, and address, data and the
LSTRB pins will remain at their previous state.
When internal visibility is enabled (IVIS=1), certain internal cycles will be blocked from going external.
During cycles when the BDM is selected, R/W will remain high, data will maintain its previous state, and
address and LSTRB pins will be updated with the internal value. During CPU no access cycles when the
BDM is not driving, R/W will remain high, and address, data and the LSTRB pins will remain at their
previous state.
4.2.1.5 Emulation Expanded Wide Mode
In expanded wide modes, Ports A and B are configured as a 16-bit multiplexed address and data bus and
Port E provides bus control and status signals. These signals allow external memory and peripheral devices
to be interfaced to the MCU. These signals can also be used by a logic analyzer to monitor the progress of
application programs.
The bus control related pins in Port E (PE7/NOACC, PE6/MODB/IPIPE1, PE5/MODA/IPIPE0,
PE4/ECLK, PE3/LSTRB/TAGLO, and PE2/R/W) are all configured to serve their bus control output
functions rather than general purpose I/O. Notice that writes to the bus control enable bits in the PEAR
register in special mode are restricted.
4.2.1.6 Emulation Expanded Narrow Mode
Expanded narrow modes are intended to allow connection of single 8-bit external memory devices for
lower cost systems that do not need the performance of a full 16-bit external data bus. Accesses to internal
resources that have been mapped external (i.e. PORTA, PORTB, DDRA, DDRB, PORTE, DDRE, PEAR,
PUCR, RDRIV) will be accessed with a 16-bit data bus on Ports A and B. Accesses of 16-bit external
words to addresses which are normally mapped external will be broken into two separate 8-bit accesses
using Port A as an 8-bit data bus. Internal operations continue to use full 16-bit data paths. They are only
visible externally as 16-bit information if IVIS=1.
Ports A and B are configured as multiplexed address and data output ports. During external accesses,
address A15, data D15 and D7 are associated with PA7, address A0 is associated with PB0 and data D8
and D0 are associated with PA0. During internal visible accesses and accesses to internal resources that
have been mapped external, address A15 and data D15 is associated with PA7 and address A0 and data
D0 is associated with PB0.
The bus control related pins in Port E (PE7/NOACC, PE6/MODB/IPIPE1, PE5/MODA/IPIPE0,
PE4/ECLK, PE3/LSTRB/TAGLO, and PE2/R/W) are all configured to serve their bus control output
functions rather than general purpose I/O. Notice that writes to the bus control enable bits in the PEAR
register in special mode are restricted.
4.2.2 Special Operating Modes
There are two special operating modes that correspond to normal operating modes. These operating modes
are commonly used in factory testing and system development.
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| MC9S12HZ128CAL | 功能描述:16位微控制器 - MCU SWORDFISH 9S12 EPP RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT |
| MC9S12HZ128VAL | 功能描述:16位微控制器 - MCU SWORDFISH 9S12 EPP RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT |
| MC9S12HZ256CAL | 功能描述:16位微控制器 - MCU SWORDFISH 9S12 EPP RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT |
| MC9S12HZ256CPV | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC9S12HZ256VAL | 功能描述:16位微控制器 - MCU SWORDFISH 9S12 EPP RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT |
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