Table A-8 lists the delays in gross memory access time for several values of VDDIO
參數(shù)資料
型號: 20-101-1094
廠商: Rabbit Semiconductor
文件頁數(shù): 130/130頁
文件大小: 0K
描述: MCU RCM4000 RABBITCORE
標(biāo)準(zhǔn)包裝: 1
系列: RabbitCore®
模塊/板類型: MPU 核心模塊
適用于相關(guān)產(chǎn)品: RCM4000
產(chǎn)品目錄頁面: 619 (CN2011-ZH PDF)
其它名稱: 316-1139
User’s Manual
93
Table A-8 lists the delays in gross memory access time for several values of VDDIO.
The measurements are taken at the 50% points under the following conditions.
T = -40°C to 85°C, V = VDDIO ±10%
Internal clock to nonloaded CLK pin delay
1 ns @ 85°C/3.0 V
The clock to address output delays are similar, and apply to the following delays.
Tadr, the clock to address delay
TCSx, the clock to memory chip select delay
TIOCSx, the clock to I/O chip select delay
TIORD, the clock to I/O read strobe delay
TIOWR, the clock to I/O write strobe delay
TBUFEN, the clock to I/O buffer enable delay
The data setup time delays are similar for both Tsetup and Thold.
When the spectrum spreader is enabled with the clock doubler, every other clock cycle is
shortened (sometimes lengthened) by a maximum amount given in the table above. The
shortening takes place by shortening the high part of the clock. If the doubler is not
enabled, then every clock is shortened during the low part of the clock period. The maxi-
mum shortening for a pair of clocks combined is shown in the table.
Rabbit’s Technical Note TN227, Interfacing External I/O with Rabbit Microprocessor
Designs, contains suggestions for interfacing I/O devices to the Rabbit 4000 microproces-
sors.
Table A-8. Preliminary Data and Clock Delays
VDDIO
(V)
Clock to Address
Output Delay
(ns)
Data Setup
Time Delay
(ns)
Worst-Case
Spectrum Spreader Delay
(ns)
30 pF
60 pF
90 pF
0.5 ns setting
no dbl / dbl
1 ns setting
no dbl / dbl
2 ns setting
no dbl / dbl
3.3
6
8
11
1
2.3 / 2.3
3 / 4.5
4.5 / 9
1.8
18
24
33
3
7 / 6.5
8 / 12
11 / 22
相關(guān)PDF資料
PDF描述
345-030-540-802 CONN CARDEDGE 30POS .100 X .200
305-030-500-202 CONN CARDEDGE 30POS .156 X .140
243-002-542-101 MINI CARD EDGE 0.2" - 2PIN 1ROW
20-101-1217 MODULE RABBITCORE RCM3229
20-101-0494 MODULE RABBITCORE RCM2250
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
20-101-1095 功能描述:模塊化系統(tǒng) - SOM BL2600 XD HOT SWAP 10/100 RoHS:否 制造商:Digi International 外觀尺寸:ConnectCore 9P 處理器類型:ARM926EJ-S 頻率:150 MHz 存儲容量:8 MB, 16 MB 存儲類型:NOR Flash, SDRAM 接口類型:I2C, SPI, UART 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 尺寸:1.97 in x 1.97 in x 6.1 in
20-101-1104 功能描述:處理器配件 USB xd reader RoHS:否 制造商:Olimex Ltd. 產(chǎn)品:Cable 用于:
20-101-1105 功能描述:模塊化系統(tǒng) - SOM RCM4100 RabbitCore Module RoHS:否 制造商:Digi International 外觀尺寸:ConnectCore 9P 處理器類型:ARM926EJ-S 頻率:150 MHz 存儲容量:8 MB, 16 MB 存儲類型:NOR Flash, SDRAM 接口類型:I2C, SPI, UART 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 尺寸:1.97 in x 1.97 in x 6.1 in
20-101-1110 功能描述:界面開發(fā)工具 Rio Protyping Board RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V
20-101-1112 功能描述:模塊化系統(tǒng) - SOM RCM4010 Core Module RoHS:否 制造商:Digi International 外觀尺寸:ConnectCore 9P 處理器類型:ARM926EJ-S 頻率:150 MHz 存儲容量:8 MB, 16 MB 存儲類型:NOR Flash, SDRAM 接口類型:I2C, SPI, UART 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 尺寸:1.97 in x 1.97 in x 6.1 in