参数资料
型号: MC68HC05BS8FB
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.2 MHz, MICROCONTROLLER, PQFP44
封装: PLASTIC, QFP-44
文件页数: 17/128页
文件大小: 9691K
代理商: MC68HC05BS8FB
MC68HC05BS8
ELECTRICAL SPECIFICATIONS
13
13.4
Control Timing
Table 13-2 Control Timing
(VDD=5.0Vdc ±10%, VSS=0Vdc, temperature range=0 to 70°C)
CHARACTERISTICS
SYMBOL
MINIMUM
MAXIMUM
UNIT
Frequency of operation
Crystal option
External clock option
fOSC
dc
4.4
MHz
Internal operating frequency (fOSC/2)
Crystal
External clock
fOP
dc
2.2
MHz
Processor cycle time
tCYC
450
ns
Crystal oscillator start-up time (crystal option)
tOXON
100
ms
Stop Recovery Start-up Time (crystal option)
tILCH
100
ms
External RESET pulse width
tRL
1.5
tCYC
Power-on RESET output width (4064 cycles)
tPORL
4064
tCYC
Watchdog RESET output pulse width
tDOGL
1.5
tCYC
Watchdog time-out
tDOG
214 x 7
217 x 7
tCYC
Timer resolution (see note 1)
Input Capture Pulse Width
Input Capture Pulse Period
tRESL
tICPW
tICPP
4
125
(see note 2)
4
tCYC
ns
tCYC
IRQ pulse width (edge-triggered)
tIPW
125
ns
IRQ pulse period
tIPP
(see note 2)
tCYC
PC0-PC5 interrupt pulse width low
(edge-triggered)
tKBIPW
125
ns
PC0-PC5 interrupt pulse period
tKBIPP
(see note 2)
tCYC
OSC1 pulse width
tOH, tOL
90
ns
EEPROM byte erase time
tEBYTE
—10
ms
EEPROM block erase time
tBLOCK
—10
ms
EEPROM bulk erase time
tEBULK
—10
ms
EEPROM program time
tPROG
—10
ms
Notes:
(1) The 2-bit timer prescaler is the limiting factor in determining timer resolution.
(2) The minimum period tICPPL, tIPP, or tKBIPP should not be less than the number of cycles it takes to
execute the interrupt service routine plus 19 tCYC.
TPG
111
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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