M16C80 Datasheet, PDF (257/358 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 2 wait)
Write Timing
Vcc=5V
BCLK
tcyc
td(BCLK-RAD)
18ns.max ^th(BCLK-RAD)
-3ns.min
MAi
Row address
td(BCLK-CAD)
18ns.max
String address
th(RAS-RAD)*1
RAS
CASL
CASH
td(BCLK-RAS) _td(BCLK-CAS)
18ns.max
18ns.max
td(BCLK-DW)
18ns.max
DW
Hi-Z
DB
tsu(DB-CAS)*1
th(BCLK-CAD)
-3ns.min
tRP*1
th(BCLK-RAS)
-3ns.min
th(BCLK-CAS)
-3ns.min
th(BCLK-DW)
-5ns.min
th(BCLK-DB)
-7ns.min
*1:It depends on operation frequency.
th(RAS-RAD)=(tcyc/2-13)ns.min
tRP=(tcyc/2 x 3-20)ns.min
tsu(DB-CAS)=(tcyc-20)ns.min
Measuring conditions
• VCC=5V±10%
• Input timing voltage
:Determined with VIH=2.5V, VIL=0.8V
• Output timing voltage
:Determined with VOH=2.0V, VOL=0.8V
Figure 28.11 VCC=5V timing diagram (10)
Rev.1.00 Aug. 02, 2005 ^{Page 246} of 329
REJ09B0187-0100