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参数资料
| 型号： | STR912FW42X6 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, FLASH, 96 MHz, RISC MICROCONTROLLER, PQFP128 |
| 封装： | 14 X 14 MM, PLASTIC, LQFP-128 |
| 文件页数： | 25/73页 |
| 文件大小： | 1538K |
| 代理商： | STR912FW42X6 |
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Obsolete
Product(s)
- Obsolete
Product(s)
STR91xF
Functional overview
31/73
respectively. The output signal EMI_RDn is the read strobe for both the low and high data
bytes.
●
8-bit multiplexed data mode: This is a variant of the 16-bit multiplexed mode. Although
this mode can provide 24 bits of address and 8 bits of data, it does require an external
latch device on Port 8. However, this mode is most efficient when connecting devices that
only require 8 bits of address on an 8-bit multiplexed address/data bus, and have simple
read, write, and latch inputs as shown in Figure 5
To use all 24 address bits, the following applies: 8 bits of lowest-order data and 8 bits of
lowest-order address are multiplexed on port 8. On port 9, 8-bits of mid-order address are
multiplexed with 8 bits of data, but these 8 data values are always at logic zero on this port
during a write operation, and these 8 data bits are ignored during a read operation. An
external latch device (such as a ‘373 latch) is needed to de-multiplex the mid-order 8
address bits that are generated on port 8. Port 7 outputs the 8 highest-order address
signals directly (not multiplexed). The output signal on pin EMI_ALE is used to demultiplex
the signals on ports 8 and 9, and the polarity of EMI_ALE is programmable. The output
signal on pin EMI_BWR_WRLn is the data write strobe, and the output on pin EMI_RDn is
the data read strobe.
●
8-bit non-multiplexed data mode (Figure 6): Eight bits of data are on port 8, while 16 bits
of address are output on ports 7 and 9. The output signal on pin EMI_BWR_BWLn is the
data write strobe and the output on pin EMI_RDn is the data read strobe.
Figure 4.
EMI 16-bit multiplexed connection example
EMI_AD0
STR91xx
16-BIT
DEVICE
EMI_AD1
EMI_AD2
EMI_AD3
EMI_AD4
EMI_AD5
EMI_AD6
EMI_AD7
EMI_AD8
EMI_AD9
EMI_AD10
EMI_AD11
EMI_AD12
EMI_AD13
EMI_AD14
EMI_AD15
EMI_ALE
EMI_RDn
EMI_BWR_WRLn
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD8
AD9
AD10
AD11
AD12
AD13
AD14
AD15
CHIP_SELECT
WRITE_LOW_BYTE
READ
ADDR_LATCH
P8.7
P8.6
P8.5
P8.4
P8.3
P8.2
P8.1
P8.0
P9.7
P9.6
P9.5
P9.4
P9.3
P9.2
P9.1
P9.0
EMI_A16
EMI_A17
EMI_A18
EMI_A19
EMI_A20
EMI_A21
EMI_A22
EMI_A23
A16
A17
A18
A19
A20
A21
A22
A23
P7.7
P7.6
P7.5
P7.4
P7.3
P7.2
P7.1
P7.0
EMI_WRHn
WRITE_HIGH_BYTE
EMI_CS0n
EMI_CS1n
EMI_CS2n
EMI_CS3n
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相关代理商/技术参数 |
参数描述 |
|---|---|
| STR912FW42X6 | 制造商:STMicroelectronics 功能描述:256K Flash 96K sram Ethernet USB CAN |
| STR912FW42X6T | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:ARM966E-S TM 16/32-Bit Flash MCU with Ethernet, USB, CAN, AC motor control, 4 timers, ADC, RTC, DMA |
| STR912FW44X6 | 功能描述:ARM微控制器 - MCU TQFP 128 14x14x1.4 1 RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT |
| STR912FW44X6 | 制造商:STMicroelectronics 功能描述:512K Flash 96K sram Ethernet USB CAN |
| STR912FW44X6T | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:ARM966E-S TM 16/32-Bit Flash MCU with Ethernet, USB, CAN, AC motor control, 4 timers, ADC, RTC, DMA |
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