參數(shù)資料
型號: PT78NR215S
廠商: Texas Instruments, Inc.
元件分類: 開關穩(wěn)壓
英文描述: RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述: 抗輻射高效,5安培開關穩(wěn)壓器
文件頁數(shù): 66/76頁
文件大?。?/td> 896K
代理商: PT78NR215S
Rev.2.02
Jun 19, 2007
page 69 of 73
REJ03B0146-0202
3823 Group
(VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = –20 to 85 °C, unless otherwise noted)
Note: When bit 6 of address 001A16 is “1” (clock synchronous).
Divide this limits value by four when bit 6 of address 001A16 is “0” (UART).
Table 22 Timing requirements (1)
Note: When bit 6 of address 001A16 is “1” (clock synchronous).
Divide this limits value by four when bit 6 of address 001A16 is “0” (UART).
(VCC = 1.8 to 4.0 V, VSS = 0 V, Ta = –20 to 85 °C, unless otherwise noted)
Table 23 Timing requirements (2)
2
1000/(4 VCC–8)
100
45
40
45
40
1000/(2 VCC–4)
200
105
85
105
85
80
800
370
220
100
Reset input “L” pulse width
Main clock input cycle time (XIN input)
Main clock input “H” pulse width
Main clock input “L” pulse width
CNTR0, CNTR1 input cycle time
CNTR0, CNTR1 input “H” pulse width
CNTR0, CNTR1 input “L” pulse width
INT0 to INT3 input “H” pulse width
INT0 to INT3 input “L” pulse width
Serial I/O clock input cycle time (Note)
Serial I/O clock input “H” pulse width (Note)
Serial I/O clock input “L” pulse width (Note)
Serial I/O input set up time
Serial I/O input hold time
tw(RESET)
tc(XIN)
twH(XIN)
twL(XIN)
tc(CNTR)
twH(CNTR)
twL(CNTR)
twH(INT)
twL(INT)
tc(SCLK)
twH(SCLK)
twL(SCLK)
tsu(RXD–SCLK)
th(SCLK–RXD)
Symbol
Parameter
Limits
Min.
s
ns
Unit
Typ.
Max.
4.0 ≤ Vcc < 4.5 V
4.5 ≤ Vcc ≤ 5.5 V
4.0 ≤ Vcc < 4.5 V
4.5 ≤ Vcc ≤ 5.5 V
4.0 ≤ Vcc < 4.5 V
4.5 ≤ Vcc ≤ 5.5 V
4.0 ≤ Vcc < 4.5 V
4.5 ≤ Vcc ≤ 5.5 V
4.0 ≤ Vcc < 4.5 V
4.5 ≤ Vcc ≤ 5.5 V
4.0 ≤ Vcc < 4.5 V
4.5 ≤ Vcc ≤ 5.5 V
2
125
1000/(10 VCC–12)
50
70
50
70
1000/VCC
1000/(5 VCC–8)
tc(CNTR)/2–20
230
2000
950
400
200
Reset input “L” pulse width
Main clock input cycle time (XIN input)
Main clock input “H” pulse width
Main clock input “L” pulse width
CNTR0, CNTR1 input cycle time
CNTR0, CNTR1 input “H” pulse width
CNTR0, CNTR1 input “L” pulse width
INT0 to INT3 input “H” pulse width
INT0 to INT3 input “L” pulse width
Serial I/O clock input cycle time (Note)
Serial I/O clock input “H” pulse width (Note)
Serial I/O clock input “L” pulse width (Note)
Serial I/O input set up time
Serial I/O input hold time
tw(RESET)
tc(XIN)
twH(XIN)
twL(XIN)
tc(CNTR)
twH(CNTR)
twL(CNTR)
twH(INT)
twL(INT)
tc(SCLK)
twH(SCLK)
twL(SCLK)
tsu(RXD–SCLK)
th(SCLK–RXD)
Symbol
Parameter
Limits
Min.
s
ns
Unit
Typ.
Max.
2.0 ≤ Vcc ≤ 4.0 V
Vcc < 2.0 V
2.0 ≤ Vcc ≤ 4.0 V
Vcc < 2.0 V
2.0 ≤ Vcc ≤ 4.0 V
Vcc < 2.0 V
2.0 ≤ Vcc ≤ 4.0 V
Vcc < 2.0 V
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