(VCC = 5V ±10%, T
參數(shù)資料
型號(hào): DS2251T-128-16
廠商: Maxim Integrated Products
文件頁(yè)數(shù): 2/22頁(yè)
文件大?。?/td> 0K
描述: IC MICROCNTRLR 128K 16MHZ 72SIMM
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 1
系列: DS225x
核心處理器: 8051
芯體尺寸: 8-位
速度: 16MHz
連通性: SIO,UART/USART
外圍設(shè)備: 電源故障復(fù)位,WDT
輸入/輸出數(shù): 32
程序存儲(chǔ)器類型: SRAM
RAM 容量: 128K x 8
電壓 - 電源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振蕩器型: 外部
工作溫度: 0°C ~ 70°C
封裝/外殼: 72-SIMM
包裝: 托盤
DS2251T
10 of 22
DC CHARACTERISTICS (continued)
(VCC = 5V ±10%, TA = 0C to +70C.)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS NOTES
Idle Mode Current at 12MHz
IIDLE
7.0
mA
3
Stop Mode Current
ISTOP
80
A
4
Pin Capacitance
CIN
10
pF
5
With BAT =
3.0V
4.0
4.25
Reset Trip Point in
Stop Mode
With BAT =
3.3V
4.4
4.65
V
1
AC CHARACTERISTICS—EXPANDED BUS MODE TIMING SPECIFICATIONS
(VCC = 5V ±10%, TA = 0C to +70C.)
#
PARAMETER
SYMBOL
MIN
MAX
UNITS
1
Oscillator Frequency
1/tCLK
1.0
16 (-16)
MHz
2
ALE Pulse Width
tALPW
2tCLK - 40
ns
3
Address Valid to ALE Low
tAVALL
tCLK - 40
ns
4
Address Hold After ALE Low
tAVAAV
tCLK - 35
ns
At 12MHz
4tCLK - 150
5
ALE Low to Valid Instruction
In
At 16MHz
tALLVI
4tCLK - 90
ns
6
ALE Low to PSEN Low
tALLPSL
tCLK - 25
ns
7
PSEN
Pulse Width
tPSPW
3tCLK - 35
ns
At 12MHz
3tCLK - 150
8
PSEN
Low to Valid
Instruction In
At 16MHz
tPSLVI
3tCLK - 90
ns
9
Input Instr. Hold after PSEN Going High
tPSIV
0
ns
10 Input Instr. Float after PSEN Going High
tPSIX
tCLK - 20
ns
11 Address Hold after PSEN Going High
tPSAV
tCLK - 8
ns
At 12MHz
5tCLK - 150
12
Address Valid to Valid
Instruction In
At 16MHz
tAVVI
5tCLK - 90
ns
13
PSEN
Low to Address Float
tPSLAZ
0
ns
14
RD
Pulse Width
tRDPW
6tCLK - 100
ns
15
WR
Pulse Width
tWRPW
6tCLK - 100
ns
At 12MHz
5tCLK - 165
16
RD
Low to Valid Data In
At 16MHz
tRDLDV
5tCLK - 105
ns
17 Data Hold after RD High
tRDHDV
0
ns
18 Data Float after RD High
tRDHDZ
2tCLK - 70
ns
19 ALE Low to Valid Data In
At 12MHz
tALLVD
8CLK - 150
ns
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