參數(shù)資料
型號(hào): TMS3705A
廠商: Texas Instruments, Inc.
英文描述: RADIO FREQUENCY I DENTIFICATION SYSTEMS
中文描述: 射頻我擠密系統(tǒng)
文件頁數(shù): 45/54頁
文件大?。?/td> 785K
代理商: TMS3705A
TMS370Cx9x
8-BIT MICROCONTROLLER
SPNS036B – JANUARY 1996 – REVISED FEBRUARY 1997
45
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
switching characteristics and timing requirements
NO.
PARAMETER
MIN
200
MAX
2000
UNIT
ns
5
tc
Cycle time SYSCLK
Cycle time, SYSCLK
Divide-by-4
Divide-by-1 (PLL)
200
500
ns
6
tw(SCL)
tw(SCH)
Pulse duration, SYSCLK low
0.5tc – 20
0.5tc
ns
7
Pulse duration, SYSCLK high
0.5tc
0.5tc + 20
ns
tc = system-clock cycle time = 1/SYSCLK
5
6
7
SYSCLK
Figure 21.
Switching Characteristics
general purpose output signal switching time requirements
MIN
NOM
MAX
UNIT
tr
tf
Rise time
30
ns
Fall time
30
ns
tf
tr
Figure 22. Signal Switching Timing
recommended EEPROM timing requirements for programming
MIN
MAX
UNIT
tw(PGM)B
tw(PGM)AR
Pulse duration, programming signal to ensure valid data is stored (byte mode)
10
ms
Pulse duration, programming signal to ensure valid data is stored (array mode)
20
ms
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