參數(shù)資料
型號: MC68HC705SB7
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封裝: SOIC-28
文件頁數(shù): 63/170頁
文件大?。?/td> 2161K
代理商: MC68HC705SB7
August 27, 1998
GENERAL RELEASE SPECIFICATION
MC68HC05SB7
ELECTRICAL SPECIFICATIONS
MOTOROLA
REV 2.1
18-5
18.8
CONTROL TIMING
NOTES:
1.
VDD=5V ± 10%, VSS = 0 V, TL≤ TA ≤ TH, unless otherwise noted.
2.
Due to process variations, operating voltages, and temperature requirements, the quoted VCO fre-
quencies are typical limits, and should be treated as reference only. It is the user’s responsibility to
ensure that the resulting internal operating frequency meets user’s requirement by setting the appropri-
ate value in the VCO Adjust Register.
3.
The minimum period tILIL should not be less than the number of cycle times it takes to execute the inter-
rupt service routine plus 21 tCYC.
Characteristic
Symbol
Min
Max
Unit
Frequency of Oscillation (OSC)
Crystal Oscillator Option
External Clock Source
Internal VCO (SCLK = 0)2
Internal VCO (SCLK = 1)2
fOSC
0.1
DC
1.5
0.5
4.2
5.8
4
MHz
kHz
Internal Operating Frequency, Crystal or External Clock (fOSC/2)
Crystal Oscillator Option
External Clock Source
fOP
0.05
DC
2.1
MHz
Cycle Time
Crystal Oscillator or External Clock source
tCYC
476
ns
Timer
Resolution
Input Capture (TCAP) pulse width
tRESL
tTH, tTL
4.0
284
tCYC
ns
Interrupt Pulse Width Low (Edge-Triggered)
tILIH
284
ns
Interrupt Pulse Period
tILIL
see note 3
tCYC
OSC1 Pulse Width (external clock input)
tOH,tOL
110
ns
Voltage Comparator Switching Time
(10 mV overdrive, either input)
tPROP
—10
s
Voltage Comparator Power Up Delay
(Bias Circuit already powered up)
tDELAY
100
s
External Capacitor Switching Time (IDIS to IRAMP)tPROP
—10
s
External Capacitor Current Source Power Up Delay
(Bias Circuit already powered up)
tDELAY
100
s
Bias Circuit Power Up Delay
tDELAY
100
s
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