MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order this document by MCM63Z737/D
Advance Information
128K x 36 and 256K x 18 Bit
Flow±Through ZBT RAM
Synchronous Fast Static RAM
The ZBT RAM is a 4M±bit synchronous fast static RAM designed to provide zero bus turnaround. The ZBT RAM allows 100% use of bus cycles during back±to±back read/write and write/read cycles. The MCM63Z737 is organized as 128K words of 36 bits each and the MCM63Z819 is organized as 256K words of 18 bits each, fabricated with high performance silicon gate CMOS technology. This device integrates input registers, a 2±bit address counter, and high speed SRAM onto a single monolithic circuit for reduced parts count in communication applications. Synchronous design allows precise cycle control with the use of an external clock (CK). CMOS circuitry reduces the overall power consumption of the integrated functions for greater reliability.
Addresses (SA), data inputs (DQ), and all control signals except output enable
(G) and linear burst order (LBO) are clock (CK) controlled through positive± edge±triggered noninverting registers.
Write cycles are internally self±timed and are initiated by the rising edge of the clock (CK) input. This feature eliminates complex off±chip write pulse generation and provides increased timing flexibility for incoming signals.
For read cycles, a flow±through SRAM allows output data to simply flow freely from the memory array.
•3.3 V LVTTL and LVCMOS Compatible
•MCM63Z737/MCM63Z819±11 = 11 ns Access/15 ns Cycle (66 MHz) MCM63Z737/MCM63Z819±15 = 15 ns Access/20 ns Cycle (50 MHz)
•Selectable Burst Sequencing Order (Linear/Interleaved)
•Internally Self±Timed Write Cycle
•Single±Cycle Deselect
•Byte Write Control
•ADV Controlled Burst
•100±Pin TQFP Package
MCM63Z737
MCM63Z819
TQ PACKAGE
TQFP
CASE 983A±01
ZBT and Zero Bus Turnaround are trademarks of Integrated Device Technology, Inc., and the architecture is supported by Micron Technology, Inc. and Motorola, Inc.
This document contains information on a new product. Specifications and information herein are subject to change without notice.
2/6/98
MOTOROLA FAST SRAM |
MCM63Z737 MCM63Z819 |
Motorola, Inc. 1998 |
D |
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1 |
PIN ASSIGNMENT
SA SA SE1 SE2 SBd |
SBc SBb SBa SE3 |
V |
V CK SW CKE G |
ADV NC NC SA SA |
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DD |
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DQc |
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100 99 9897 9695 94 93 92 91 90 89 88 87 86 85 84 83 82 81 |
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1 |
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80 |
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DQb |
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DQc |
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2 |
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79 |
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DQb |
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DQc |
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78 |
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DQb |
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VDDQ |
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VDDQ |
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DQc |
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DQb |
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DQc |
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74 |
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DQb |
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DQc |
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8 |
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DQb |
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DQc |
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72 |
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DQb |
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VSS |
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VSS |
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VDDQ |
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DQc |
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DDQ |
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DQb |
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DQc |
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13 |
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DQb |
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67 |
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V |
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VDD |
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66 |
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SS |
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V |
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VDD |
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SS |
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65 |
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VDD |
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VSS |
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64 |
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V |
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DQd |
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SS |
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63 |
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DQa |
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DQd |
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62 |
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DQa |
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VDDQ |
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61 |
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VDDQ |
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VSS |
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60 |
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V |
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DQd |
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SS |
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59 |
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DQa |
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DQd |
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23 |
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58 |
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DQa |
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DQd |
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57 |
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DQa |
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DQd |
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DQa |
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VDDQ |
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SS |
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DQd |
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53 |
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DQa |
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DQd |
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DQa |
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DQd |
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DQa |
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31 32 33 34 35 36 3738 39 40 41 42 43 44 4546 4748 49 50 |
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LBO SA SA SA SA SA1 SA0 |
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SS |
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DD |
NC NC SA SA SA SA SA SA SA |
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NC NC V |
V |
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TOP VIEW
MCM63Z737
MCM63Z737DMCM63Z819 |
MOTOROLA FAST SRAM |
2 |
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PIN ASSIGNMENT
SA SA SE1 SE2 NC |
NC SBb SBa SE3 |
V |
V CK SW CKE |
G ADV NC NC SA SA |
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NC |
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100 99 9897 9695 94 93 92 91 90 89 88 87 86 85 84 83 82 81 |
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1 |
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80 |
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SA |
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NC |
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79 |
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NC |
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NC |
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VDDQ |
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77 |
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VDDQ |
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VSS |
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V |
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NC |
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SS |
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75 |
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NC |
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NC |
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74 |
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DQa |
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DQb |
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73 |
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DQb |
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72 |
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DQa |
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VSS |
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10 |
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71 |
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VSS |
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VDDQ |
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11 |
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70 |
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V |
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DQb |
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12 |
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DDQ |
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69 |
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DQa |
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DQb |
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13 |
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68 |
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DQa |
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VSS |
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14 |
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67 |
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V |
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VDD |
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15 |
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66 |
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SS |
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V |
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VDD |
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16 |
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SS |
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65 |
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VDD |
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VSS |
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64 |
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V |
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DQb |
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18 |
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SS |
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63 |
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DQa |
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DQb |
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62 |
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DQa |
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VDDQ |
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61 |
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VDDQ |
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VSS |
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60 |
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V |
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DQb |
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22 |
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SS |
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59 |
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DQa |
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DQb |
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23 |
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58 |
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DQa |
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DQb |
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57 |
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NC |
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NC |
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25 |
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56 |
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NC |
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VSS |
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55 |
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V |
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VDDQ |
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27 |
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SS |
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54 |
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VDDQ |
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NC |
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28 |
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53 |
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NC |
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NC |
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29 |
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52 |
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NC |
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30 |
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NC |
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51 |
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NC |
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31 32 33 34 35 36 3738 39 40 41 42 43 44 4546 4748 49 50 |
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LBO SA SA SA SA SA1 SA0 |
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SS |
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DD |
NC NC SA SA SA SA SA SA SA |
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NC NC V |
V |
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TOP VIEW
MCM63Z819
MOTOROLA FAST SRAM |
MCM63Z737DMCM63Z819 |
|
3 |
MCM63Z737 PIN DESCRIPTIONS
Pin Locations |
Symbol |
Type |
Description |
|
|
|
|
85 |
ADV |
Input |
Synchronous Load/Advance: Loads a new address into counter when |
|
|
|
low. RAM uses internally generated burst addresses when high. |
|
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|
89 |
CK |
Input |
Clock: This signal registers the address, data in, and all control signals |
|
|
|
except G and LBO. |
|
|
|
|
87 |
CKE |
Input |
Clock Enable: Disables the CK input when CKE is high. |
|
|
|
|
(a) 51, 52, 53, 56, 57, 58, 59, 62, 63 |
DQx |
I/O |
Synchronous Data I/O: ªxº refers to the byte being read or written |
(b) 68, 69, 72, 73, 74, 75, 78, 79, 80 |
|
|
(byte a, b, c, d). |
(c) 1, 2, 3, 6, 7, 8, 9, 12, 13 |
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(d) 18, 19, 22, 23, 24, 25, 28, 29, 30 |
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86 |
G |
Input |
Asynchronous Output Enable. |
|
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31 |
LBO |
Input |
Linear Burst Order Input: This pin must remain in steady state (this |
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|
signal not registered or latched). It must be tied high or low. |
|
|
|
Low ± linear burst counter. |
|
|
|
High ± interleaved burst counter. |
|
|
|
|
32, 33, 34, 35, 44, 45, 46, |
SA |
Input |
Synchronous Address Inputs: These inputs are registered and must |
47, 48, 49, 50, 81, 82, 99, 100 |
|
|
meet setup and hold times. |
|
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|
|
36, 37 |
SA0, SA1 |
Input |
Synchronous Burst Address Inputs: The two LSB's of the address field. |
|
|
|
These pins must preset the burst address counter values. These inputs |
|
|
|
are registered and must meet setup and hold times. |
|
|
|
|
93, 94, 95, 96 |
SBx |
Input |
Synchronous Byte Write Inputs: Enables write to byte ªxº |
(a) (b) (c) (d) |
|
|
(byte a, b, c, d) in conjunction with SW. Has no effect on read cycles. |
|
|
|
|
98 |
SE1 |
Input |
Synchronous Chip Enable: Active low to enable chip. |
|
|
|
|
97 |
SE2 |
Input |
Synchronous Chip Enable: Active high for depth expansion. |
|
|
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|
92 |
SE3 |
Input |
Synchronous Chip Enable: Active low for depth expansion. |
|
|
|
|
88 |
SW |
Input |
Synchronous Write: This signal writes only those bytes that have been |
|
|
|
selected using the byte write SBx pins. |
|
|
|
|
15, 16, 41, 65, 91 |
VDD |
Supply |
Core Power Supply. |
4, 11, 20, 27, 54, 61, 70, 77 |
VDDQ |
Supply |
I/O Power Supply. |
5, 10, 14, 17, 21, 26, 40, |
VSS |
Supply |
Ground. |
55, 60, 64, 66, 67, 71, 76, 90 |
|
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|
|
38, 39, 42, 43, 83, 84 |
NC |
Ð |
No Connection: There is no connection to the chip. |
|
|
|
|
MCM63Z737DMCM63Z819 |
MOTOROLA FAST SRAM |
4 |
|
MCM63Z819 PIN DESCRIPTIONS
Pin Locations |
Symbol |
Type |
Description |
|
|
|
|
85 |
ADV |
Input |
Synchronous Load/Advance: Loads a new address into counter when |
|
|
|
low. RAM uses internally generated burst addresses when high. |
|
|
|
|
89 |
CK |
Input |
Clock: This signal registers the address, data in, and all control signals |
|
|
|
except G and LBO. |
|
|
|
|
87 |
CKE |
Input |
Clock Enable: Disables the CK input when CKE is high. |
|
|
|
|
(a) 58, 59, 62, 63, 68, 69, 72, 73, 74 |
DQx |
I/O |
Synchronous Data I/O: ªxº refers to the byte being read or written |
(b) 8, 9, 12, 13, 18, 19, 22, 23, 24 |
|
|
(byte a, b). |
|
|
|
|
86 |
G |
Input |
Asynchronous Output Enable. |
|
|
|
|
31 |
LBO |
Input |
Linear Burst Order Input: This pin must remain in steady state (this |
|
|
|
signal not registered or latched). It must be tied high or low. |
|
|
|
Low ± linear burst counter. |
|
|
|
High ± interleaved burst counter. |
|
|
|
|
32, 33, 34, 35, 44, 45, 46, |
SA |
Input |
Synchronous Address Inputs: These inputs are registered and must |
47, 48, 49, 50, 80, 81, 82, 99, 100 |
|
|
meet setup and hold times. |
|
|
|
|
36, 37 |
SA0, SA1 |
Input |
Synchronous Burst Address Inputs: The two LSB's of the address field. |
|
|
|
These pins must preset the burst address counter values. These inputs |
|
|
|
are registered and must meet setup and hold times. |
|
|
|
|
93, 94 |
SBx |
Input |
Synchronous Byte Write Inputs: Enables write to byte ªxº |
(a) (b) |
|
|
(byte a, b) in conjunction with SW. Has no effect on read cycles. |
|
|
|
|
98 |
SE1 |
Input |
Synchronous Chip Enable: Active low to enable chip. |
|
|
|
|
97 |
SE2 |
Input |
Synchronous Chip Enable: Active high for depth expansion. |
|
|
|
|
92 |
SE3 |
Input |
Synchronous Chip Enable: Active low for depth expansion. |
|
|
|
|
88 |
SW |
Input |
Synchronous Write: This signal writes only those bytes that have been |
|
|
|
selected using the byte write SBx pins. |
|
|
|
|
15, 16, 41, 65, 91 |
VDD |
Supply |
Core Power Supply. |
4, 11, 20, 27, 54, 61, 70, 77 |
VDDQ |
Supply |
I/O Power Supply. |
5, 10, 14, 17, 21, 26, 40, |
VSS |
Supply |
Ground. |
55, 60, 64, 66, 67, 71, 76, 90 |
|
|
|
|
|
|
|
1, 2, 3, 6, 7, 25, 28, 29, 30, 38, |
NC |
Ð |
No Connection: There is no connection to the chip. |
39, 42, 43, 51, 52, 53, 56, 57, |
|
|
|
75, 78, 79, 83, 84, 95, 96 |
|
|
|
|
|
|
|
MOTOROLA FAST SRAM |
MCM63Z737DMCM63Z819 |
|
5 |
TRUTH TABLE
|
|
|
|
|
|
|
|
|
|
|
|
SA0 ± |
|
Input Command |
|
CK |
|
CKE |
|
E |
SW |
|
SBx |
ADV |
SAx |
Next Operation |
Code |
Notes |
|||
|
|
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|
|
|
|
|
|
||
L±H |
|
1 |
|
X |
|
X |
|
X |
X |
X |
Hold |
H |
1, 2 |
||
|
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|
||
L±H |
|
0 |
|
False |
|
X |
|
X |
0 |
X |
Deselect |
D |
1, 2 |
||
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|
||
L±H |
|
0 |
|
True |
0 |
|
|
V |
0 |
V |
Load Address, New Write |
W |
1, 2, 3, 4, 5 |
||
|
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|
||
L±H |
|
0 |
|
True |
1 |
|
|
X |
0 |
V |
Load Address, New Read |
R |
1, 2 |
||
|
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|
|||
L±H |
|
0 |
|
X |
|
X |
V (W) |
1 |
X |
Burst |
B |
1, 2, 4, |
|||
|
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|
|
6, 7 |
|
|
|
|
|
|
|
|
X (R, D) |
|
|
Continue |
|
|||
|
|
|
|
|
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|
|
||||
|
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|
|
|
NOTES:
1.X = don`t care, 1 = logic high, 0 = logic low, V = valid signal, according to AC Operating Conditions and Characteristics.
2.E = true if SE1 and SE3 = 0, and SE2 = 1.
3.Byte write enables, SBx, are evaluated only as new write addresses are loaded.
4.No control inputs except CKE, SBx, and ADV are recognized in a clock cycle where ADV is sampled high.
5.A write with SBx not valid does load addresses.
6.A burst write with SBx not valid does increment address.
7.ADV controls whether the RAM enters burst mode. If the previous cycle was a write, then ADV = 1 results in a burst write. If the previous cycle is a read, then ADV = 1 results in a burst read. ADV = 1 will also continue a deselect cycle.
WRITE TRUTH TABLE
|
|
|
|
|
|
|
|
|
|
SBc |
SBd |
Cycle Type |
SW |
SBa |
|
SBb |
(See Note 1) |
(See Note 1) |
|||||
|
|
|
|
|
|
|
|
|
|||
Read |
|
H |
|
X |
|
X |
X |
X |
|||
|
|
|
|
|
|
|
|
|
|||
Write Byte a |
|
L |
|
L |
|
H |
H |
H |
|||
|
|
|
|
|
|
|
|
|
|||
Write Byte b |
|
L |
|
H |
|
L |
H |
H |
|||
|
|
|
|
|
|
|
|
|
|||
Write Byte c (See Note 1) |
|
L |
|
H |
|
H |
L |
H |
|||
|
|
|
|
|
|
|
|
|
|||
Write Byte d (See Note 1) |
|
L |
|
H |
|
H |
H |
L |
|||
|
|
|
|
|
|
|
|
|
|||
Write All Bytes |
|
L |
|
L |
|
L |
L |
L |
|||
|
|
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|
|
|
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|
|
|
NOTE: |
|
|
|
|
|
|
|
|
|
|
|
1. Valid only for MCM63Z737. |
|
|
|
|
|
|
|
|
|
|
|
LINEAR BURST ADDRESS TABLE (LBO = VSS)
1st Address (External) |
2nd Address (Internal) |
3rd Address (Internal) |
4th Address (Internal) |
||||
|
|
|
|
|
|
|
|
X . . . |
X00 |
X . . . |
X01 |
X . . . |
X10 |
X . . . |
X11 |
|
|
|
|
|
|
|
|
X . . . |
X01 |
X . . . |
X10 |
X . . . |
X11 |
X . . . |
X00 |
|
|
|
|
|
|
|
|
X . . . |
X10 |
X . . . |
X11 |
X . . . |
X00 |
X . . . |
X01 |
|
|
|
|
|
|
|
|
X . . . |
X11 |
X . . . |
X00 |
X . . . |
X01 |
X . . . |
X10 |
|
|
|
|
|
|
|
|
INTERLEAVED BURST ADDRESS TABLE (LBO = VDD)
1st Address (External) |
2nd Address (Internal) |
3rd Address (Internal) |
4th Address (Internal) |
||||
|
|
|
|
|
|
|
|
X . . . |
X00 |
X . . . |
X01 |
X . . . |
X10 |
X . . . |
X11 |
|
|
|
|
|
|
|
|
X . . . |
X01 |
X . . . |
X00 |
X . . . |
X11 |
X . . . |
X10 |
|
|
|
|
|
|
|
|
X . . . |
X10 |
X . . . |
X11 |
X . . . |
X00 |
X . . . |
X01 |
|
|
|
|
|
|
|
|
X . . . |
X11 |
X . . . |
X10 |
X . . . |
X01 |
X . . . |
X00 |
|
|
|
|
|
|
|
|
MCM63Z737DMCM63Z819 |
MOTOROLA FAST SRAM |
6 |
|