參數(shù)資料
型號: MC68HC05SB7
廠商: FREESCALE SEMICONDUCTOR 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: MO-150, SSOP-28
文件頁數(shù): 68/170頁
文件大?。?/td> 2161K
代理商: MC68HC05SB7
GENERAL RELEASE SPECIFICATION
August 27, 1998
MOTOROLA
GENERAL DESCRIPTION
MC68HC05SB7
1-4
REV 2.1
1.5
PIN ASSIGNMENTS
The MC68HC05SB7 is available in 28-pin SSOP package. The pin assignments
are shown in Figure 1-2.
Figure 1-2. MC68HC05SB7 Pin Assignments
1.6
FUNCTIONAL PIN DESCRIPTION
The following paragraphs give a description of the general function of each pin.
1.6.1 VDD, VSS
Power is supplied to the MCU through VDD and VSS. VDD is the positive supply,
and VSS is ground. The MCU operates from a single power supply.
Very fast signal transitions occur on the MCU pins. The short rise and fall times
place very high short-duration current demands on the power supply. To prevent
noise problems, special care should be taken to provide good power supply
bypassing at the MCU by using bypass capacitors with good high-frequency char-
acteristics that are positioned as close to the MCU as possible. Bypassing
requirements vary, depending on how heavily the MCU pins are loaded.
1.6.2 OSC1, OSC2
When selected by a mask option, the OSC1 and OSC2 pins are the connections
for the external pin oscillator (EPO). The OSC1 and OSC2 pins can accept the fol-
lowing sets of components:
1.
A crystal as shown in Figure 1-3(a).
2.
A ceramic resonator as shown in Figure 1-3(a).
3.
An external clock signal as shown in Figure 1-3(b).
28
27
26
25
24
23
22
21
20
19
18
1
2
3
4
5
6
7
8
9
10
11
VSS
CSA
VDD
PB3/CS1 (OSC2)
CAP(ADC)
PC4
PB2/CS0 (OSC1)
ESV
VM
PC5
PC6
PC7
PA7/SDA1
PA6/SCL1
PA5/SDA0
PA4/SCL0
PA3/PWM3
12
13
14
PB6/AN1
PB7/AN0
17
16
15
PA2/PWM2
PA1/PWM1
PA0/PWM0
RESET
PB5/AN2
PB4/AN3
TM
IRQ/VPP
PB1/TCAP
相關(guān)PDF資料
PDF描述
MC68HC705SB7 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC05SU3AB 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP42
MC68HC05T2P 8-BIT, MROM, MICROCONTROLLER, PDIP40
MC68HC08AS32CFN 8-BIT, EEPROM, 8.4 MHz, MICROCONTROLLER, PQCC52
MC68HC08AS32VFN 8-BIT, EEPROM, 8.4 MHz, MICROCONTROLLER, PQCC52
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC05SC24 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Secure 8-bit microcomputer with EEPROM
MC68HC05SR3 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcontroller Units
MC68HC05SU3A 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Fully static chip design featuring the industry standard 8-bit M68HC05 core
MC68HC05T16 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit
MC68HC05V12 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontreller Unit