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EMC646SP16JP-55LL Datasheet(PDF) 4 Page - Emerging Memory & Logic Solutions Inc

Part # EMC646SP16JP-55LL
Description  4Mx16 bit CellularRAM
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Manufacturer  EMLSI [Emerging Memory & Logic Solutions Inc]
Direct Link  http://www.emlsi.com
Logo EMLSI - Emerging Memory & Logic Solutions Inc

EMC646SP16JP-55LL Datasheet(HTML) 4 Page - Emerging Memory & Logic Solutions Inc

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EMC646SP16J
4Mx16 CellularRAM
4
Preliminary
List of Figures
Figure 1:
Functional Block Diagram - 4 meg x 16 ................................................................................................................. 6
Figure 2:
Power-Up Initialization Timing ............................................................................................................................... 9
Figure 3:
READ Operation (ADV# LOW) .............................................................................................................................. 10
Figure 4:
WRITE Operation (ADV# LOW) ............................................................................................................................. 11
Figure 5:
Page Mode READ Operation (ADV# LOW) ........................................................................................................... 11
Figure 6:
Burst Mode READ (4-word burst)........................................................................................................................... 12
Figure 7:
Burst Mode WRITE (4-word burst).......................................................................................................................... 13
Figure 8:
Refresh Collision During Variable-Latency READ Operation ................................................................................. 14
Figure 9:
Wired or WAIT Configuration ................................................................................................................................. 15
Figure 10:
Configuration Register WRITE, Asynchronous Mode, Followed by READ ARRAY Operation .............................. 17
Figure 11:
Configuration Register WRITE, Synchronous Mode, Followed by READ ARRAY Operation ................................ 18
Figure 12:
Register READ, Asynchronous Mode, Followed by READ ARRAY Operation ...................................................... 19
Figure 13:
Register READ, Synchronous Mode, Followed by READ ARRAY Operation ........................................................ 20
Figure 14:
Load Configuration Register .................................................................................................................................. 21
Figure 15:
Read Configuration Register ................................................................................................................................. 21
Figure 16:
Bus Configuration Register Definition .................................................................................................................... 22
Figure 17:
WAIT Configuration During Burst Operation .......................................................................................................... 24
Figure 18:
Latency Counter (Variable Initial Latency, No Refresh Collision) ........................................................................... 25
Figure 19:
Latency Counter (Fixed Latency) ........................................................................................................................... 26
Figure 20:
Refresh Configuration Register Mapping ............................................................................................................... 27
Figure 21:
AC Input/Output Reference Waveform .................................................................................................................. 30
Figure 22:
AC Output Load Circuit .......................................................................................................................................... 30
Figure 23:
Initialization Period ................................................................................................................................................. 35
Figure 24:
DPD Entry and Exit Timing Parameters ................................................................................................................. 35
Figure 25:
Asynchronous READ ............................................................................................................................................. 36
Figure 26:
Asynchronous READ Using ADV# ......................................................................................................................... 37
Figure 27:
PAGE MODE READ .............................................................................................................................................. 38
Figure 28:
Single-Access Burst READ Operation - Variable Latency ...................................................................................... 39
Figure 29:
4-Word Burst READ Operation - Variable Latency ................................................................................................. 40
Figure 30:
Single-Access Burst READ Operation - Fixed Latency .......................................................................................... 41
Figure 31:
4-Word Burst READ Operation - Fixed Latency ..................................................................................................... 42
Figure 32:
READ Burst Suspend ............................................................................................................................................ 43
Figure 33:
Burst READ at End-of-Row (Wrap off) ................................................................................................................... 44
Figure 34:
CE# - Controlled Asychronous WRITE .................................................................................................................. 45
Figure 35:
LB#/UB# - Controlled Asychronous WRITE ........................................................................................................... 46
Figure 36:
WE# - Controlled Asychronous WRITE ................................................................................................................. 47
Figure 37:
Asynchronous WRITE Using ADV# ....................................................................................................................... 48
Figure 38:
Burst WRITE Operation - Variable Latency Mode .................................................................................................. 49
Figure 39:
Burst WRITE Operation - Fixed Latency Mode ...................................................................................................... 50
Figure 40:
Burst WRITE at End-of-Row (Wrap off) ................................................................................................................. 51
Figure 41:
Burst WRITE Followed by Burst READ .................................................................................................................. 52
Figure 42:
Burst READ Interrupted by Burst READ or WRITE ................................................................................................ 53
Figure 43:
Burst WRITE Interrupted by Burst WRITE or READ - Variable Latency Mode ....................................................... 54
Figure 44:
Burst WRITE Interrupted by Burst WRITE or READ - Fixed Latency Mode ........................................................... 55
Figure 45:
Asynchronous WRITE Followed by Burst READ ................................................................................................... 56
Figure 46:
Asynchronous WRITE (ADV# LOW) Followed by Burst READ ............................................................................. 57
Figure 47:
Burst READ Followed by Asynchronous WRITE (WE# - Controlled) ..................................................................... 58
Figure 48:
Burst READ Followed by Asynchronous WRITE Using ADV# ............................................................................... 59
Figure 49:
Asynchronous WRITE Followed by Asynchronous READ - ADV# LOW ............................................................... 60
Figure 50:
Asynchronous WRITE Followed by Asynchronous READ ..................................................................................... 61


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