參數(shù)資料
型號: MC68HC05J1AVDWR2
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO20
封裝: SOIC-20
文件頁數(shù): 70/126頁
文件大?。?/td> 1118K
代理商: MC68HC05J1AVDWR2
Technical Data
MC68HC05J1A — Rev. 1.0
48
Resets
MOTOROLA
Resets
5.3 Reset Types
A reset immediately stops the operation of the instruction being
executed, initializes certain control bits, and loads the program counter
with a user-defined reset vector address. These conditions produce a
reset:
Initial power-up (power-on reset)
A logic 0 applied to the RESET pin (external reset)
Timeout of the mask-optional computer operating properly (COP)
watchdog (COP reset)
An opcode fetch from an address not in the memory map (illegal
address reset)
Figure 5-1 is a block diagram of the reset sources.
Figure 5-1. Reset Sources
5.3.1 Power-On Reset
A positive transition on the VDD pin generates a power-on reset. The
power-on reset is strictly for power-up conditions and cannot be used to
detect drops in power supply voltage.
VDD
RESET
LATCH
INTERNAL ADDRESS BUS
R
COP WATCHDOG
(MASK OPTION)
POWER-ON RESET
ILLEGAL ADDRESS RESET
RST
TO CPU
INTERNAL CLOCK
AND
SUBSYSTEMS
相關(guān)PDF資料
PDF描述
MC68HCP11A1CFNE3 8-BIT, EEPROM, 3 MHz, MICROCONTROLLER, PQCC52
MC68HLC705KJ1C 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PDIP16
MC68HRC08JK1CDW 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO20
MC68HC08JK1CP 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PDIP20
MC68HC08JK1CDW 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO20
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC05J1AVP 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers
MC68HC05J3 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcomputer Unit
MC68HC05J3CDW 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcomputer Unit
MC68HC05J3CP 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcomputer Unit
MC68HC05J3DW 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcomputer Unit