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2005-10-22 by yodathgreat
Hi all, I use a LPC2214. In External SRAM, I have two K6F1008V2V-LF55. (55 ns) (Configured in 16 Bit). My Quartz is 14.7456 MHZ. (PLL*4) Which configuration do I have to use for BCFG0 ??? I have some access problemes. best regards Yodathegreat
2005-10-22 by Richard Duits
I tried to find the K6F1008V2V with google, but did not find it. Do you have a link to a datasheet for this part? Richard. yodathgreat wrote:
> Hi all, > > I use a LPC2214. > > In External SRAM, I have two K6F1008V2V-LF55. (55 ns) > (Configured in 16 Bit). > > My Quartz is 14.7456 MHZ. (PLL*4) > > Which configuration do I have to use for BCFG0 ??? > > I have some access problemes. > > best regards > Yodathegreat > >
2005-10-22 by yodathgreat
Hi, No problem, http://www.samsung.com/Products/Semiconductor/SRAM/LowPower/LowPower_n_LowVoltage/1Mbit/K6F1008V2C/K6F1008V2C.htm best regards --- In lpc2000@yahoogroups.com, Richard Duits <yahoo@r...> wrote:
> > I tried to find the K6F1008V2V with google, but did not find it. Do you > have a link to a datasheet for this part? > > Richard. > > > yodathgreat wrote: > > > Hi all, > > > > I use a LPC2214. > > > > In External SRAM, I have two K6F1008V2V-LF55. (55 ns) > > (Configured in 16 Bit). > > > > My Quartz is 14.7456 MHZ. (PLL*4) > > > > Which configuration do I have to use for BCFG0 ??? > > > > I have some access problemes. > > > > best regards > > Yodathegreat > > > > >
2005-10-22 by Zdravko
Hi, I have a board with LPC2214 and BS616LV1622(55 ns) to bank 1, connected as per User Manual page 45, fig 8,a). BS616LV1622 is configured in 16 bit mode. I have 10 MHz xtal and PLL connected at 60 MHz. I use BCFG1 = 0x10001C63; Works without a problem. Hope this will help you. Zdravko --- In lpc2000@yahoogroups.com, "yodathgreat" <christophe.darnet@l...> wrote:
> > Hi all, > > I use a LPC2214. > > In External SRAM, I have two K6F1008V2V-LF55. (55 ns) > (Configured in 16 Bit). > > My Quartz is 14.7456 MHZ. (PLL*4) > > Which configuration do I have to use for BCFG0 ??? > > I have some access problemes. > > best regards > Yodathegreat >
2005-10-22 by Richard Duits
I assumed you wired the RAMs as follows: RAM:OE <- LPC:OE RAM:A0 <- LPC:A1 (this is important, otherwise you can use only half of the ram) RAM:A1 <- LPC:A2 (etc.) RAM:WR <- LPC:BLSn (needed for byte writes) see also figure 8 on page 45 of the LPC2214 User Manual (May 03, 2004). The BCFG configuration (assuming CCLK = 58.9824 MHz) WST1 >= 55 ns (3.24 * CCLK cycle) -> WST1 = 3 WST2 >= 45 ns (2.65 * CCLK cycle) -> WST2 = 2 IDCY >= 20 ns (1.10 * CCLK cycle) -> IDCY = 1 RBLE = 1 (you need the BLS lines) WP = 0 BM = 0 MW = 1 (16 bit = 2 x 8 bit devices) These are the minimum values you can use, but for testing I would use the maximum values allowed by the LPC2214 to see if the RAM is wired and soldered correctly. Richard. yodathgreat wrote:
> Hi, > > No problem, > > http://www.samsung.com/Products/Semiconductor/SRAM/LowPower/LowPower_n_LowVoltage/1Mbit/K6F1008V2C/K6F1008V2C.htm > > best regards > > > --- In lpc2000@yahoogroups.com, Richard Duits <yahoo@r...> wrote: > > > > I tried to find the K6F1008V2V with google, but did not find it. Do you > > have a link to a datasheet for this part? > > > > Richard. > > > > > > yodathgreat wrote: > > > > > Hi all, > > > > > > I use a LPC2214. > > > > > > In External SRAM, I have two K6F1008V2V-LF55. (55 ns) > > > (Configured in 16 Bit). > > > > > > My Quartz is 14.7456 MHZ. (PLL*4) > > > > > > Which configuration do I have to use for BCFG0 ??? > > > > > > I have some access problemes. > > > > > > best regards > > > Yodathegreat > > > > > > > >