參數(shù)資料
型號(hào): DS87C520-WCL
廠商: Maxim Integrated Products
文件頁數(shù): 27/43頁
文件大小: 0K
描述: IC MCU EPROM/ROM 33MHZ HS 40CDIP
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 10
系列: 87C
核心處理器: 8051
芯體尺寸: 8-位
速度: 33MHz
連通性: EBI/EMI,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)器容量: 16KB(16K x 8)
程序存儲(chǔ)器類型: EPROM,UV
RAM 容量: 1K 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: 40-CDIP(0.600",15.24mm)窗口
包裝: 管件
其它名稱: DS87C520WCL
DS87C520/DS83C520 EPROM/ROM High-Speed Microcontrollers
33 of 43
MOVX CHARACTERISTICS
VARIABLE CLOCK
PARAMETER
SYMBOL
MIN
MAX
UNITS
STRETCH
1.5tCLCL-5
tMCS=0
Data Access ALE Pulse Width
tLHLL2
2tCLCL-5
ns
tMCS>0
0.5tCLCL-5
tMCS=0
Port 0 Address Valid to ALE Low
tAVLL2
tCLCL-5
ns
tMCS>0
0.5tCLCL-10
tMCS=0
Address Hold after ALE Low for
MOVX Write
tLLAX2
tCLCL-7
ns
tMCS>0
2tCLCL-5
tMCS=0
RD Pulse Width
tRLRH
tMCS-10
ns
tMCS>0
2tCLCL-5
tMCS=0
WR Pulse Width
tWLWH
tMCS-10
ns
tMCS>0
2tCLCL-22
tMCS=0
RD Low to Valid Data In
tRLDV
tMCS-24
ns
tMCS>0
Data Hold After Read
tRHDX
0
ns
tCLCL-5
tMCS=0
Data Float after Read
tRHDZ
2tCLCL-5
ns
tMCS>0
2.5tCLCL-31
tMCS=0
ALE Low to Valid Data In
tLLDV
tMCS+tCLCL-26
ns
tMCS>0
3tCLCL-29
tMCS=0
Port 0 Address to Valid Data In
tAVDV1
tMCS+2tCLCL-
29
ns
tMCS>0
3.5tCLCL-37
tMCS=0
Port 2 Address to Valid Data In
tAVDV2
tMCS+2.5tCLCL-
37
ns
tMCS>0
0.5tCLCL-10
0.5tCLCL+5
tMCS=0
ALE Low to
RD or WR Low
tLLWL
tCLCL-5
tCLCL+5
ns
tMCS>0
tCLCL-9
tMCS=0
Port 0 Address to
RD or WR Low
tAVWL1
2tCLCL-7
ns
tMCS>0
1.5tCLCL-17
tMCS=0
Port 2 Address to
RD or WR Low
tAVWL2
2.5tCLCL-16
ns
tMCS>0
Data Valid to
WR Transition
tQVWX
-6
ns
tCLCL-5
tMCS=0
Data Hold after Write
tWHQX
2tCLCL-6
ns
tMCS>0
RD Low to Address Float
tRLAZ
(Note 2)
ns
-4
10
tMCS=0
RD or WR High to ALE High
tWHLH
tCLCL-5
tCLCL+5
ns
tMCS>0
Note 1:
tMCS is a time period related to the Stretch memory cycle selection. The following table shows the value of tMCS for
each Stretch selection.
Note 2:
Address is driven strongly until ALE falls, and is then held in a weak latch until overdriven externally.
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