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参数资料
型号： M38869FFAHP
元件分类： 微控制器/微处理器
英文描述： 8-BIT, FLASH, 5 MHz, MICROCONTROLLER, PQFP80
封装： 12 X 12 MM, 0.50 MM PITCH, PLASTIC, LQFP-80
文件页数： 46/113页
文件大小： 1871K
代理商： M38869FFAHP
35
3886 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
BUS INTERFACE
The 3886 group has a 2-byte bus interface function which is al-
most functionally equal to MELPS8-41 series and the control
signal from the host CPU side can operate it (slave mode).
It is possible to connect the 3886 group with the RD and WR
separated CPU bus directly. Figure 34 shows the block diagram of
the bus interface function.
The data bus buffer function I/O pins (P42, P43, P46, P47, P50–
P53, P8) also function as the normal digital port I/O pins. When bit
0 (data bus buffer enable bit) of the data bus buffer control regis-
ter (address 002A16) is “0,” these pins become the normal digital
port I/O pins. When it is “1,” these bits become the data bus buffer
function I/O pins.
The selection of either the single data bus buffer mode, which
uses 1 byte: data bus buffer 0 only, or the double data bus buffer
mode, which uses 2 bytes: data bus buffer 0 and data bus buffer
1, is performed by bit 1 (data bus buffer function selection bit) of
the data bus buffer control register (address 002A16). Port P47 be-
comes S1 input in the double data bus buffer mode. When data is
written from the host CPU side, an input buffer full interrupt oc-
curs. When data is read from the host CPU, an output buffer
empty interrupt occurs. This microcomputer shares two input
buffer full interrupt requests and two output buffer empty interrupt
requests as shown in Figure 32, respectively.
Fig. 32 Interrupt request circuit of data bus buffer
Input buffer
full flag 0
IBF0
Input buffer
full flag 1
IBF1
Rising edge
detection circuit
One-shot pulse
generating circuit
One-shot pulse
generating circuit
Input buffer full interrupt
request signal IBF
Output buffer
full flag 0
OBF0
Output buffer
full flag 1
OBF1
One-shot pulse
generating circuit
One-shot pulse
generating circuit
Output buffer empty interrupt
request signal OBE
Interrupt request is set at this rising edge
IBF0
IBF1
IBF
OBF0
(
OBE0)
OBF1
(
OBE1)
OBE
OBE0
OBE1
Rising edge
detection circuit
Rising edge
detection circuit
Rising edge
detection circuit
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相关代理商/技术参数
参数描述
M38869FFAHP#UU 功能描述:IC 740/3886 MCU FLASH 80LQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 产品培训模块:CAN Basics Part-1 CAN Basics Part-2 Electromagnetic Noise Reduction Techniques Part 1 M16C Product Overview Part 1 M16C Product Overview Part 2 标准包装:1 系列:M16C™ M32C/80/87 核心处理器:M32C/80 芯体尺寸:16/32-位 速度:32MHz 连通性:EBI/EMI，I²C，IEBus，IrDA，SIO，UART/USART 外围设备:DMA，POR，PWM，WDT 输入/输出数:121 程序存储器容量:384KB（384K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:24K x 8 电压 - 电源 (Vcc/Vdd):3 V ~ 5.5 V 数据转换器:A/D 34x10b，D/A 2x8b 振荡器型:内部 工作温度:-20°C ~ 85°C 封装/外壳:144-LQFP 包装:托盘 产品目录页面:749 (CN2011-ZH PDF) 配用:R0K330879S001BE-ND - KIT DEV RSK M32C/87
M38869FF-XXXHP 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M38869M1-XXXHP 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M38869M2-XXXHP 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M38869M3-XXXHP 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
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