參數(shù)資料
型號： MC68HC05B16
廠商： Motorola, Inc.
元件分類： DC/DC變換器
英文描述： RS-S_D(Z) Series - Econoline Regulated DC-DC Converters; Input Voltage (Vdc): 24V; Output Voltage (Vdc): 15V; Power: 2W; 2:1 and 4:1 Wide Input Voltage Ranges; 1kVDC, 2kVD & 3kVDC Isolation; UL94V-0 Package Material; Continuous Short Circuit Protection; Low Noise; No External Capacitor needed; Efficiency to 83%
中文描述： 高密度互補金屬氧化物半導體（HCMOS）微機組
文件頁數(shù)： 14/96頁
文件大?。?/td> 3045K
代理商： MC68HC05B16
MC68HC05SR3
Freescale
2-1
PIN DESCRIPTIONS
2
PIN DESCRIPTIONS
This section provides a description of the functional pins of the MC68HC05SR3 microcontroller.
2.1
Functional Pin Descriptions
PIN NAME
40-pin PDIP
PIN No.
42-pin SDIP
PIN No.
44-pin QFP
PIN No.
DESCRIPTION
VDD
VSS
VSS(INT)
VSS(EXT)
4
1
—
5
—
1
2
10, 33
32
6
7
Power is supplied to the MCU using these pins.
VDD should be connected to the positive supply.
VSS, VSS(INT), and VSS(EXT) should be connected to
supply ground.
VPP
7
8
13
This is the EPROM programming voltage input pin on the
MC68HC705SR3. On the MC68HC05SR3 part, this pin
should be connected to VDD or VSS.
IRQ
349
IRQ is software programmable to provide two choices of
interrupt triggering sensitivity. These options are:
1) negative-edge-sensitive triggering only, or
2) both negative-edge-sensitive and level-sensitive
triggering.
This pin has an integrated pull-up resistor to VDD but should
be tied to VDD if not needed to improve noise immunity. The
IRQ pin contains an internal Schmitt trigger as part of its
input to improve noise immunity. The voltage on this pin may
affect the mode of operation as described in Section 10.
RESET
238
This pin can be used as an input to reset the MCU to a
known start-up state by pulling it to the low state. The
RESET pin contains an internal Schmitt trigger to improve
its noise immunity as an input. It also has an internal
pull-down device that pulls the RESET pin low during the
power-on reset cycles and an integrated pull-up resistor to
VDD.
TIMER
8
9
14
The TIMER pin provides an optional gating input to the
timer. Refer to Section 6 for additional information.
OSC1, OSC2
5, 6
6, 7
11, 12
The OSC1 and OSC2 pins are the connections for the
on-chip oscillator. See Section 2.2 for detail.
TPG
19
05SR3.Book Page 1 Thursday, August 4, 2005 1:08 PM
相關PDF資料
PDF描述
MC68HC05P3 RS3-S_D(Z) Series - Econoline Regulated DC-DC Converters; Input Voltage (Vdc): 12V; Output Voltage (Vdc): 05V; Power: 3W; 2:1 and 3:1 Wide Input Voltage Ranges; 1kVDC, 2kVDC & 3kVDC Isolation; UL94V-0 Package Material; Continuous Short Circuit Protection; Low Ripple and Noise; Remote On/Off Control; Efficiency to 83%
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