NEC V850E/MA1 User Manual page 199

(2) Auto-refresh cycle
In the auto-refresh cycle, the auto-refresh command (REF) is issued four clocks after the precharge
command for all banks (PALL) is issued.
SDCLK (output)
Command
BCYST (output)
SDCKE (output)
CSn (output)
SDRAS (output)
SDCAS (output)
WE (output)
LDQM (output)
UDQM (output)
Address (output)
A10 (output)
D0 to D15 (I/O)
Remarks 1. The broken lines indicate the high-impedance state.
2. n = 1, 3, 4, 6
CHAPTER 5 MEMORY ACCESS CONTROL FUNCTION
Figure 5-17. Auto-Refresh Cycle
TABPW TREFW
PALL
H
H
H
H
User's Manual U14359EJ4V0UM
Auto-refresh cycle
TREFW TREFW TREF
REF
Address
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