參數(shù)資料
型號(hào): MC68HC05CT4FN
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.048 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 58/142頁
文件大?。?/td> 624K
代理商: MC68HC05CT4FN
NON-DISCLOSURE
AGREEMENT
REQUIRED
General Description
General Release Specification
MC68HC05CT4 Rev. 2.0
22
General Description
MOTOROLA
NOTE:
The voltage on the IRQ pin affects the mode of operation. See Section
1.4.4 OSC1 and OSC2
These pins provide control input for an on-chip clock oscillator circuit that
drives the PLL reference source. A crystal resonator, a ceramic
resonator, or an external signal connects to these pins providing a
system clock. The oscillator frequency is selectable between 5 or 40
times the internal bus rate. Typical oscillator configurations and
component values are shown in Figure 1-4. The manufacturer of the
crystal should be consulted, since actual component values are
dependent on the type of crystal used.
Figure 1-4. Oscillator Connections
1.4.5 Reset (RESET)
This active-low pin is used to reset the MCU to a known startup state by
pulling RESET low. The RESET pin contains an internal Schmitt trigger
as part of its input to improve noise immunity. See Section 5. Resets.
<
OSC1
OSC2
OSC1
OSC2
MCU
EXTERNAL CLOCK
UNCONNECTED
(a) Crystal/Ceramic Resonator
(b) External Clock Source
10 M
10.24 MHz
Oscillator Connections
Connections
15 pF
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