參數(shù)資料
型號: MC68HSC05P1ADWR2
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO28
封裝: SOIC-28
文件頁數(shù): 69/124頁
文件大小: 623K
代理商: MC68HSC05P1ADWR2
MC68HC05P1A Rev. 3.0
General Release Specification
MOTOROLA
Operating Modes
49
NON-DISCLOSURE
AGREEMENT
REQUIRED
General Release Specification — MC68HC05P1A
Section 6. Operating Modes
6.1 Contents
6.2 Introduction
The MC68HC05P1A uses single-chip mode. The conditions required to
enter this mode are shown in Table 6-1. The mode of operation is
determined by the voltages on the IRQ and PD7/TCAP pins on the rising
edge of the external RESET pin.
The mode of operation is also determined whenever the internal COP
watchdog timer resets the MCU. When the COP timer expires, the
voltage applied to the IRQ pin affects the mode of operation, while the
voltage applied to PD7/TCAP is ignored if the voltage at the IRQ pin
Table 6-1. Operating Mode Conditions After Reset
RESET Pin
IRQ Pin
PD7/TCAP
Mode
VSS to VDD
Single-Chip
VTST = 2 x VDD
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