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K4M283233H-NG7L Datasheet(PDF) 11 Page - Samsung semiconductor

Part # K4M283233H-NG7L
Description  1M x 32Bit x 4 Banks Mobile SDRAM in 90FBGA
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Manufacturer  SAMSUNG [Samsung semiconductor]
Direct Link  http://www.samsung.com/Products/Semiconductor
Logo SAMSUNG - Samsung semiconductor

K4M283233H-NG7L Datasheet(HTML) 11 Page - Samsung semiconductor

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K4M283233H - F(H)N/G/L/F
11
Mobile SDRAM
January 2006
1. In order to save power consumption, Mobile SDRAM has PASR option.
2. Mobile SDRAM supports 3 kinds of PASR in self refresh mode : full array, 1/2 of full array, 1/4 of full array.
BA1=0
Partial Self Refresh Area
1. Apply power and attempt to maintain CKE at a high state and all other inputs may be undefined.
- Apply VDD before or at the same time as VDDQ.
2. Maintain stable power, stable clock and NOP input condition for a minimum of 200us.
3. Issue precharge commands for all banks of the devices.
4. Issue 2 or more auto-refresh commands.
5. Issue a mode register set command to initialize the mode register.
6. Issue a extended mode register set command to define DS or PASR operating type of the device after normal MRS.
For operating with DS or PASR , set DS or PASR mode in EMRS setting stage.
In order to adjust another mode in the state of DS or PASR mode, additional EMRS set is required but power up sequence is not
needed again at this time. In that case, all banks have to be in idle state prior to adjusting EMRS set.
BA0=0
BA1=0
BA0=0
BA1=0
BA0=1
BA1=1
BA0=1
BA1=1
BA0=0
BA1=1
BA0=1
BA1=1
BA0=0
BA1=0
BA0=1
BA1=0
BA0=0
BA1=0
BA0=1
BA1=1
BA0=1
BA1=1
BA0=0
Partial Array Self Refresh
B. POWER UP SEQUENCE
Internal Temperature Compensated Self Refresh (TCSR)
- Full Array
- 1/2 Array
- 1/4 Array
Note :
1. In order to save power consumption, Mobile-DRAM includes the internal temperature sensor and control units to control the self
refresh cycle automatically according to the two temperature range : 45
°C and 85 °C(for Extended), 70 °C(for Commercial).
2. If the EMRS for external TCSR is issued by the controller, this EMRS code for TCSR is ignored.
3. It has +/-5
°C tolerance.
Temperature Range
Self Refresh Current (Icc6)
Unit
-N/L
-G/F
Full Array
1/2 of Full Array
1/4 of Full Array
85/70
°C *3
330
330
230
190
uA
45
°C
200
150
130


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