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| | | J | | | | | Pu 00 i\CFJOL.LIVO | | iidth ive | 1 | 00U | | |
| | | | | | frequency = 100Hz | | |
| | | | | | Ta = 250C | |
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The operation mode of the M5M5V32R16 is determined by a combination of the device control inputs /S, /W, /OE, /LB, and /UB. Each mode is summarized in the function table. A write cycle is executed whenever the low level /W overlaps with low level /LB and/or low level lUB and low level /S. The address must be set-up before write cycle and must be stable during the entire cycle. The data is latched into a cell on the traling edge of /W, /LB, /UB or /S, whichever occurs first, requiring the set-up and hold time relative to these edge to be maintained. The output enable input /OE directly controls the output stage. Setting the /OE at a high level, the output stage is in a high impedance state, and the data bus contention problem in the write cycle is eliminated. A read cycle is excuted by setting W at a high level and /OE at a low level while /LB and/or /UB and IS are in an active state. (/LB and/or IUB=L, /S=L)