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| XA-H4 Datasheet, PDF (36/42 Pages) NXP Semiconductors – Single-chip 16-bit microcontroller | |||
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Philips Semiconductors
Single-chip 16-bit microcontroller
Preliminary specification
XA-H4
Clkout
tCHAV
A19 â A1
A0
CS
BLE, WE
tCHSL
tAVSL
tCHSL
D7 â D0
Note. OE is inactive during all writes.
tSHDH
tSHAH
tAVSL
tDVSL
Figure 16. Generic 16-Bit Write on 8-Bit Bus
tCHSH
tSHAH
SU01246
ClkOut
tCHAV
tCHAV
A
RAS
CAS ADDRESS
tCHSL
tAVSL
tCHAH
CASL
(CASH stays high)
OE
tCHSL
D[7:0]
tCHSL
tCHAV
tCHAV
CAS ADDRESS EVEN
tCHAH
tAVSL
tCHSH
CAS ADDRESS ODD
tCHAH
tCHSH
tCPWH
tDIS
LS Byte
tDIH
Note 2
tDIS
Note 2
MS Byte
Figure 17. 16-Bit Read on 8-Bit Bus, DRAM (both FPM and EDO)
SU01284
1999 Sep 24
36
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