參數(shù)資料
型號: MC68HC05J3CP
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, PDIP20
封裝: PLASTIC, DIP-20
文件頁數(shù): 75/92頁
文件大小: 912K
代理商: MC68HC05J3CP
MC68HC05J3
MOTOROLA
9-5
ELECTRICAL SPECIFICATIONS
9
9.4
AC electrical characteristics
(1) Since the 2-bit prescaler in the timer must count four external cycles (tCYC), this is the limiting factor in
determining the timer resolution.
(2) The minimum period tTLTL should not be less than the number of cycles it takes to execute the capture
interrupt service routine plus 24 tCYC.
(3) The minimum period tILIL should not be less than the number of cycles it takes to execute the interrupt
service routine plus 21 tCYC.
Table 9-5 AC electrical characteristics for 5V operation
(VDD = 5.0 Vdc ± 10%, VSS = 0 Vdc, TA = TL to TH
Characteristic
Symbol
Min
Max
Unit
Frequency of operation
Crystal
External clock
fOSC
dc
4.2
MHz
Internal operating frequency
Crystal (fOSC /2)
External clock (fOSC /2)
fOP
dc
2.1
MHz
Processor cycle time
tCYC
480
ns
Ceramic resonator start-up time
tOXOV
10
ms
Ceramic resonator STOP recovery start-up time
tILCH
10
ms
OSC1 pulse width
tOH, tOL
90
ns
RESET pulse width
tRL
1.5
tCYC
16-bit timer
Resolution(1)
Input capture pulse width
Input capture pulse period
tRESL
tTLTH
tTLTL
250
(2)
4
tCYC
ns
tCYC
Power-on reset delay
tPORL
4064
tCYC
Interrupt pulse width low (edge-triggered)
tILIH
125
ns
Interrupt pulse period (see Figure 9-2)
tILIL
(3)
tCYC
TPG
74
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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