Kinetis Microcontrollers中的主题 K64 & K66 family devices support for NOR Flash & PSRAM

K64 & K66 family devices support for NOR Flash & PSRAM

praveenkajjam — Wed, 31 Aug 2016 13:43:24 GMT

Hello,

Will K64 & K66 family devices support the interface for NOR Flash & PSRAM over the FlexBus? I am not able to find any design reference in Reference Manual. We have a requirement to use the MT38W1011A90YZQXZI.XB8

combo memory in our design from Micron.

Thanks & Regards,

Praveen Kajjam.

Re: K64 & K66 family devices support for NOR Flash & PSRAM

jeremyzhou — Thu, 01 Sep 2016 06:29:36 GMT

Hi Praveen,

The TWR-MEM module includes a SRAM device, and it can work with other tower boards likes the TWR-K60D100 to read or write the SRAM chip.

TWR-MEM:

http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=TWR-MEM

TWR-K60D100:

TWR-K60D100M|Tower System Board|Kinetis MCUs|NXP

Have a great day,
Ping

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Re: K64 & K66 family devices support for NOR Flash & PSRAM

praveenkajjam — Thu, 01 Sep 2016 07:05:06 GMT

Hello Jeremyzhou,

My question is not regarding SRAM. I want to interface NOR Flash and PSRAM over FlexBus. Planning to use this chip from Micron. Will K64& K66 support interface to this device over FlexBus?

Thanks & Regards,

Praveen Kajjam

Re: K64 & K66 family devices support for NOR Flash & PSRAM

jeremyzhou — Thu, 01 Sep 2016 08:36:26 GMT

Hi Praveen,

The FlexBus interface can support the single NOR Flash or PSRAM device, however about the MT38W1011A90YZQXZI, the FlexBus interface will fail to support the some operation with the NOR Flash and PSRAM simultaneously.
Have a great day,
Ping

Re: K64 & K66 family devices support for NOR Flash & PSRAM

praveenkajjam — Tue, 20 Sep 2016 07:35:22 GMT

Hello Jeremy,

Thanks for your confirmation. Anyhow we are going to use either NOR flash or PSRAM as the address & data bus is multiplexed between them. But I did pin comparison of the combo memory chip with the FlexBus of K64, I found that it perfectly meets the interface requirements for PSRAM but not fully meets interface requirements for NOR Flash. Refer the below table for the same. Cells highlighted (NOT_WP, NOR_RP, NOR_CLK and NOR_WAIT) in orange are not supported from FlexBus. Any guidance on how to handle them (Especially NOR-WAIT)? If you have any reference schematics with NOR Flash interface that will be useful.

	Micron -NOR+PSRAM
Freescale-K64	MT38W1011A90YZQXZI.XB8
MK64FN1M0VLQ12	NOR FLASH	PSRAM
FB_AD0	A_00	A_00
FB_AD1	A_01	A_01
FB_AD2	A_02	A_02
FB_AD3	A_03	A_03
FB_AD4	A_04	A_04
FB_AD5	A_05	A_05
FB_AD6	A_06	A_06
FB_AD7	A_07	A_07
FB_AD8	A_08	A_08
FB_AD9	A_09	A_09
FB_AD10	A_10	A_10
FB_AD11	A_11	A_11
FB_AD12	A_12	A_12
FB_AD13	A_13	A_13
FB_AD14	A_14	A_14
FB_AD15	A_15	A_15
FB_AD16	DQ_00	DQ_00
FB_AD17	DQ_01	DQ_01
FB_AD18	DQ_02	DQ_02
FB_AD19	DQ_03	DQ_03
FB_AD20	DQ_04	DQ_04
FB_AD21	DQ_05	DQ_05
FB_AD22	DQ_06	DQ_06
FB_AD23	DQ_07	DQ_07
FB_AD24	DQ_08	DQ_08
FB_AD25	DQ_09	DQ_09
FB_AD26	DQ_10	DQ_10
FB_AD27	DQ_11	DQ_11
FB_AD28	DQ_12	DQ_12
FB_AD29	DQ_13	DQ_13
FB_AD30	DQ_14	DQ_14
FB_AD31	DQ_15	DQ_15
FB_A16	A_16	A_16
FB_A17	A_17	A_17
FB_A18	A_18	A_18
FB_A19	A_19	A_19
FB_A20	A_20	A_20
FB_A21	A_21	A_21
FB_A22	A_22	NA
FB_A23	NA	NA
FB_A24	NA	NA
FB_A25	NA	NA
FB_A26	NA	NA
FB_A27	NA	NA
FB_A28	NA	NA
FB_A29	NA	NA
FB_CS0	NOR_CE	PSRAM_CE
FB_CS1	NA	NA
FB_CS2	NA	NA
FB_CS3	NA	NA
FB_CS4	NA	NA
FB_CS5	NA	NA
FB_OE	NOR_OE	PSRAM_OE
FB_RW	NOR_WE	PSRAM_WE
FB_BE_0_7	NA	NA
FB_BE_8_15	NA	NA
FB_BE_16_23	NA	PSRAM_LB
FB_BE_24_31	NA	PSRAM_UB
FB_ALE	NOR_ADV	NA
NA	NOR_WP	NA
NA	NOR_RP	NA
NA	NOR_CLK	NA
NA	NOR_WAIT	NA

Thanks & Regards,

Praveen Kajjam