參數(shù)資料
型號: MC68HC05G3
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PQFP80
封裝: QFP-80
文件頁數(shù): 61/128頁
文件大小: 290K
代理商: MC68HC05G3
Page 28
MOTOROLA
Section 2: MODES OF OPERATION
MC68HC05G3 (705G4) Specification Rev. 1.1
Figure 2-1: HC05G3 (705G4) Mode Entry Diagram
2.3
SINGLE-CHIP MODE (SCM)
In this mode, all address and data bus activity occurs within the MCU so no external pins
are required for these functions. The single-chip mode allows the maximum number of I/O
pins for on-chip peripheral functions: port A through port J.
2.4
SELF-CHECK/BOOTSTRAP MODE
In this mode, the reset vector is fetched from a 496-byte internal self-check ROM or
bootstrap ROM for MC68HC(7)05G4 at $FE00-$FFEF. The self-check ROM contains a
self-check program to test the functions of internal modules. The bootstrap ROM contains
a small program which reads a program into the internal RAM and then passes control to
that program at location $0040, or executes EPROM programming sequence, or dumps
EPROM contents.
RESET
IRQ1
IRQ2
SINGLE-CHIP
*
1
0
1
0
1
0
相關(guān)PDF資料
PDF描述
MC68HC705J5ACJP 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP16
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參數(shù)描述
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