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參數(shù)資料
| 型號(hào)： | MC68HC05G3 |
| 廠商： | MOTOROLA INC |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | QFP-80 |
| 文件頁(yè)數(shù)： | 60/128頁(yè) |
| 文件大?。?/td> | 290K |
| 代理商： | MC68HC05G3 |
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Page 27
Section 2: MODES OF OPERATION
MOTOROLA
MC68HC05G3 (705G4) Specification Rev. 1.1
SECTION 2
MODES OF OPERATION
2.1
GENERAL
The MC68HC05G3 has two operating modes: single-chip mode and self-check mode. In
the MC68HC705G4, the self-check mode becomes bootstrap mode.
The single-chip mode allows maximum use of pins for on-chip peripheral functions.
The self-check capability of MC68HC05G3 provides an internal check to determine if the
device is functional.
The bootstrap mode is provided for EPROM programming, dumping EPROM contents,
reading programs into the internal RAM, and executing it. This is a very versatile mode
because the special purpose program that is bootloaded into the internal RAM essentially
has no limitations.
2.2
MODE ENTRY
The mode entry is done at the rising edge of the RESET pin. Once the device enters one
of the three modes, the mode only can be changed by external reset not by software.
At the rising edge of the RESET pin, the device latches the states of IRQ1 and IRQ2 pins
and places itself in the specified mode. While the RESET pin is low, all pins are configured
as single-chip mode. The following table shows the states of IRQ1 and IRQ2 pins for each
mode.
Table 2-1: Mode Select Summary
MODE
RESET
IRQ1
IRQ2
SINGLE-CHIP MODE
L or H
X
SELF-CHECK/BOOTSTRAP
VTST
H
H= VDD
L
= GND
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC68HC705J5ACJP | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP16 |
| MC68HC705J5ACP | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP20 |
| MC68HC05J5AJDW | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO16 |
| MC68HRC705J5ACDW | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO20 |
| MC68HRC05J5ADW | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO20 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC05J1 | 制造商:MOTOROLA 制造商全稱(chēng):Motorola, Inc 功能描述:HCMOS MICROCONTROLLER UNIT |
| MC68HC05J1A | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:Microcontrollers |
| MC68HC05J1ACDW | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:Microcontrollers |
| MC68HC05J1ACP | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:Microcontrollers |
| MC68HC05J1ADW | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:Microcontrollers |
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