參數(shù)資料
型號(hào)： MC68HC05P4ADWR2
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, PDSO28
封裝： PLASTIC, SOIC-28
文件頁(yè)數(shù)： 67/102頁(yè)
文件大小： 930K
代理商： MC68HC05P4ADWR2
MC68HC05P4A — Rev. 6.0
Advance Information
MOTOROLA
Self-Check Mode
67
Advance Information — MC68HC05P4A
Section 10. Self-Check Mode
10.1 Contents
10.2 Introduction
The self-check program resides at mask ROM (read-only memory)
locations $1F00 to $1FEF. This program is designed to check the part’s
functionality with a minimum of support hardware. The computer
operating properly (COP) subsystem is disabled in the self-check mode
so that routines that feed the COP do not exist in the self-check program.
10.3 Functional Description
The self-check mode is entered on the rising edge of RESET if the IRQ
pin is driven to double the supply voltage and the TCAP/PD7 pin is at
logic 1. RESET must be held low for 4064 cycles after power-on reset
(POR) or for a time, tRL, for any other reset. After reset, the input/output
(I/O), random-access memory (RAM), ROM, timer, simple serial
input/output port (SIOP), and interrupts are tested. Self-check results
(using light-emitting diodes (LEDs) as monitors) are shown in
Table 10-1. It is not recommended that the user code use any of the
self-check code. The self-check code is subject to change at any time
to improve testability or manufacturability.
Figure 10-1 illustrates a self-check circuit.
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參數(shù)描述
MC68HC05P4DW 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT
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MC68HC05P6_1 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT
MC68HC05P8 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT
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