NEC V850E/MA1 User Manual page 123

Figure 4-4. Timing Example of Access to SRAM, External ROM, and External I/O (Read → → → → Write)
Internal system
BUSCLK (output)
A0 to A25 (output)
BCYST (output)
CSn/RASm (output)
RD (output)
OE (output)
WE (output)
UWR/UCAS (output)
LWR/LCAS (output)
IORD (output)
IOWR (output)
LBE (output)
UBE (output)
D0 to D15 (I/O)
WAIT (input)
Note When the IOEN bit of the BCP register is set to 1.
Remarks 1. The circle
2. The broken lines indicate the high-impedance state.
3. n = 0 to 7, m = 1, 3, 4, 6
CHAPTER 4 BUS CONTROL FUNCTION
T1
clock
Address
Note
indicates the sampling timing.
User's Manual U14359EJ4V0UM
T2 T1 T2
Address
Data Data
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