M16C80 Datasheet, PDF (276/358 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/80 SERIES

M16C/80 Group
28. Electrical characteristics
Memory expansion Mode and Microprocessor Mode
(When accessing DRAM area with 1 wait)
Write Timing
BCLK
tcyc
td(BCLK-RAD) _th(BCLK-RAD)
25ns.max
0ns.min
MAi
Row address
td(BCLK-CAD) th(BCLK-CAD)
25ns.max
0ns.min
String address
th(RAS-RAD)*1
tRP*1
RAS
CASL
CASH
DW
td(BCLK-RAS) td(BCLK-CAS)
25ns.max
25ns.max
td(BCLK-DW)
25ns.max
tsu(DB-CAS)*1
th(BCLK-RAS)
0ns.min
th(BCLK-CAS)
0ns.min
th(BCLK-DW)
-3ns.min
Hi-Z
DB
th(BCLK-DB)
-7ns.min
*1:It depends on operation frequency.
th(RAS-RAD)=(tcyc/2-25)ns.min
tRP=(tcyc/2 x 3-40)ns.min
tsu(DB-CAS)=(tcyc-40)ns.min
Vcc=3V
Measuring conditions
• VCC=3V±10%
• Input timing voltage
:Determined with VIH=1.5V, VIL=0.5V
• Output timing voltage
:Determined with VOH=1.5V, VOL=1.5V
Figure 28.22 VCC=3V timing diagram (8)
Rev.1.00 Aug. 02, 2005 ^{Page 265} of 329
REJ09B0187-0100