參數(shù)資料
型號(hào)： MC68334GCEH16
廠商： Freescale Semiconductor
文件頁數(shù)： 20/76頁
文件大?。?/td> 0K
描述： IC MCU 16MHZ 2K RAM 132-PQFP
標(biāo)準(zhǔn)包裝： 36
系列： M683xx
核心處理器： CPU32
芯體尺寸： 32-位
速度： 16MHz
連通性： EBI/EMI，UART/USART
輸入/輸出數(shù)： 47
程序存儲(chǔ)器類型： ROMless
RAM 容量： 1K x 8
電壓 - 電源 (Vcc/Vdd)： 3 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 8x8/10b
振蕩器型： 外部
工作溫度： -40°C ~ 85°C
封裝/外殼： 132-BQFP 緩沖式
包裝： 托盤
MC68334
MC68334TS/D REV. 1
27
3.4.10 Operand Alignment
The data multiplexer establishes the necessary connections for different combinations of address and
data sizes. The multiplexer takes the two bytes of the 16-bit bus and routes them to their required po-
sitions. Positioning of bytes is determined by the size and address outputs. SIZ1 and SIZ0 indicate the
remaining number of bytes to be transferred during the current bus cycle. The number of bytes trans-
ferred is equal to or less than the size indicated by SIZ1 and SIZ0, depending on port width.
ADDR0 also affects the operation of the data multiplexer. During an operand transfer, ADDR[23:1] in-
dicate the word base address of the portion of the operand to be accessed, and ADDR0 indicates the
byte offset from the base.
3.4.11 Misaligned Operands
CPU32 processor architecture uses a basic operand size of 16 bits. An operand is misaligned when it
overlaps a word boundary. This is determined by the value of ADDR0. When ADDR0 = 0 (an even ad-
dress), the address is on a word and byte boundary. When ADDR0 = 1 (an odd address), the address
is on a byte boundary only. A byte operand is aligned at any address; a word or long-word operand is
misaligned at an odd address. The MCU does not support misaligned operand transfers.
The largest amount of data that can be transferred by a single bus cycle is an aligned word. If the MCU
transfers a long-word operand via a 16-bit port, the most significant operand word is transferred on the
first bus cycle and the least significant operand word on a following bus cycle.
3.4.12 Operand Transfer Cases
The following table summarizes how operands are aligned for various types of transfers. OPn entries
are portions of a requested operand that are read or written during a bus cycle and are defined by SIZ1,
SIZ0, and ADDR0 for that bus cycle.
1. Operands in parentheses are ignored by the CPU32 during read cycles.
2. The CPU32 does not support misaligned word or long-word transfers.
3. Three-byte transfer cases occur only as a result of a long word to byte transfer.
Table 12 Operand Alignment
Transfer Case
SIZ1
SIZ0
ADDR0
DSACK1
DSACK0
DATA
[15:8]
DATA
[7:0]
Byte to 8-Bit Port (Even/Odd)
0
1
X
1
0
OP0
(OP0)1
Byte to 16-Bit Port (Even)
0
1
0
X
OP0
(OP0)
Byte to 16-Bit Port (Odd)
0
1
0
X
(OP0)
OP0
Word to 8-Bit Port (Aligned)
1
0
1
0
OP0
(OP1)
Word to 8-Bit Port (Misaligned)2
1
0
1
0
OP0
(OP0)
Word to 16-Bit Port (Aligned)
1
0
X
OP0
OP1
Word to 16-Bit Port (Misaligned)2
1
0
1
0
X
(OP0)
OP0
3 Byte to 8-Bit Port (Aligned)3
1
0
1
0
OP0
(OP1)
3 Byte to 8-Bit Port (Misaligned)2, 3
1
0
OP0
(OP0)
3 Byte to 16-Bit Port (Aligned)3
1
0
X
OP0
OP1
3 Byte to 16-Bit Port (Misaligned)2, 3
1
0
X
(OP0)
OP0
Long Word to 8-Bit Port (Aligned)
0
1
0
OP0
(OP1)
Long Word to 8-Bit Port (Misaligned)2
1
0
1
0
OP0
(OP0)
Long Word to 16-Bit Port (Aligned)
0
X
OP0
OP1
Long Word to 16-Bit Port (Misaligned)2
1
0
1
0
X
(OP0)
OP0
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MC68334GCEH16 制造商:Freescale Semiconductor 功能描述:Microcontroller
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MC68334GCFC16 功能描述:IC MCU 16MHZ 1K RAM 132-PQFP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:M683xx 其它有關(guān)文件:STM32F101T8 View All Specifications 特色產(chǎn)品:STM32 32-bit Cortex MCUs 標(biāo)準(zhǔn)包裝:490 系列:STM32 F1 核心處理器:ARM? Cortex?-M3 芯體尺寸:32-位 速度:36MHz 連通性:I²C，IrDA，LIN，SPI，UART/USART 外圍設(shè)備:DMA，PDR，POR，PVD，PWM，溫度傳感器，WDT 輸入/輸出數(shù):26 程序存儲(chǔ)器容量:64KB（64K x 8） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):2 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 10x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:36-VFQFN，36-VFQFPN 包裝:托盤 配用:497-10030-ND - STARTER KIT FOR STM32497-8853-ND - BOARD DEMO STM32 UNIV USB-UUSCIKSDKSTM32-PL-ND - KIT IAR KICKSTART STM32 CORTEXM3497-8512-ND - KIT STARTER FOR STM32F10XE MCU497-8505-ND - KIT STARTER FOR STM32F10XE MCU497-8304-ND - KIT STM32 MOTOR DRIVER BLDC497-6438-ND - BOARD EVALUTION FOR STM32 512K497-6289-ND - KIT PERFORMANCE STICK FOR STM32MCBSTM32UME-ND - BOARD EVAL MCBSTM32 + ULINK-MEMCBSTM32U-ND - BOARD EVAL MCBSTM32 + ULINK2更多... 其它名稱:497-9032STM32F101T8U6-ND
MC68334GEH16 功能描述:32位微控制器 - MCU 32B MCU SIM TPU 1K RAM RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:90 MHz 程序存儲(chǔ)器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風(fēng)格:SMD/SMT
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