参数资料
型号: M38D59GC-XXXFP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 6.25 MHz, MICROCONTROLLER, PQFP80
封装: 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80
文件页数: 101/142页
文件大小: 2004K
代理商: M38D59GC-XXXFP
Rev.3.04
May 20, 2008
Page 61 of 134
REJ03B0158-0304
38D5 Group
RESET CIRCUIT
To reset the microcomputer, RESET pin should be held at an “L”
level for 2
s or more. Then the RESET pin is returned to an “H”
level (the power source voltage should be between VCC (min.)
and 5.5 V), reset is released.
After the reset is completed, the program starts from the address
contained in address FFFD16 (high-order byte) and address
FFFC16 (low-order byte). Make sure that the reset input voltage
meets VIL spec. When a power source voltage passes VCC (min.).
In the flash memory version, input to the RESET pin in the
following procedure.
When power source is stabilized
(1) Input “L” level for 2
s or more to RESET pin.
(2) Input “H” level to RESET pin.
At power-on
(1) Input “L” level to RESET pin.
(2) Increase the power source voltage to 2.7 V.
(3) Wait for td(P-R) until internal power source has stabilized.
(4) Input “H” level to RESET pin.
In the QzROM version, the input level applied to the OSCSEL
pin is determined when the RESET pin changes from “L” to “H”.
Fig. 57 Reset circuit example
Fig. 58 Reset sequence
VCC
Power source
voltage detection
circuit
RESET
VCC
RESET
0 V
VCC
RESET
0.2VCC or less
0 V
VCC
RESET
td(P-R) or more
5 V
2.7 V
(1)
Note 1: QzROM version: 2
s or more
Flash memory version: td(P-R) or more
VCC (min.)
RESET
Internal
reset
Address
Data
SYNC
System clock
φ
OSCSEL=L: OCO
OSCSEL=H: XIN
FFFC
FFFD
ADH, ADL
ADL
ADH
????
Reset address from
vector table
OSCSEL=L: OCO= about 32768 cycles
OSCSEL=H: XIN= about 8192 cycles
Notes 1: The frequency of system clock
φ is f(OCO)/32 or f(XIN)/8.
2: The question marks (?) indicate an undefined state.
3: In the QzROM version, the input level applied to the OSCSEL pin is determined when the RESET pin changes from “L” to “H”.
相关PDF资料
PDF描述
MC68B05P2L 8-BIT, MROM, 2 MHz, MICROCONTROLLER, CDIP28
MC908QB4MDT 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO16
MC908QY2AVDWE 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO16
MK2745-20SLF 108 MHz, VIDEO CLOCK GENERATOR, PDSO16
MK2742-04SLFTR 81 MHz, VIDEO CLOCK GENERATOR, PDSO16
相关代理商/技术参数
参数描述
M38D59GFFP#U0 功能描述:IC 740/38D5 MCU QZ-ROM 80QFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:740/38000 标准包装:250 系列:80C 核心处理器:8051 芯体尺寸:8-位 速度:16MHz 连通性:EBI/EMI,I²C,UART/USART 外围设备:POR,PWM,WDT 输入/输出数:40 程序存储器容量:- 程序存储器类型:ROMless EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:A/D 8x10b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:68-LCC(J 形引线) 包装:带卷 (TR)
M38D59GFHP#U0 功能描述:IC 740/38D5 MCU QZ-ROM 80LQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:740/38000 标准包装:250 系列:80C 核心处理器:8051 芯体尺寸:8-位 速度:16MHz 连通性:EBI/EMI,I²C,UART/USART 外围设备:POR,PWM,WDT 输入/输出数:40 程序存储器容量:- 程序存储器类型:ROMless EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:A/D 8x10b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:68-LCC(J 形引线) 包装:带卷 (TR)
M38D59T-RLFS 功能描述:BOARD EMULATOR FOR 38D5 GROUP RoHS:否 类别:编程器,开发系统 >> 内电路编程器、仿真器以及调试器 系列:- 产品变化通告:Development Systems Discontinuation 19/Jul/2010 标准包装:1 系列:* 类型:* 适用于相关产品:* 所含物品:*
M38DC-15 制造商:M/A-COM Technology Solutions 功能描述:MIXER(SPEC UX1015) - Bulk
M38K00F1-16FP 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER