M30245_06 RENESAS [Renesas Technology Corp], M30245_06 Datasheet - Page 350

• Manufacturer Part Number: M30245_06
• Description: RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/20 SERIES
• Manufacturer: RENESAS [Renesas Technology Corp]

M30245 Group
Rev.2.00 Oct 16, 2006
REJ09B0340-0200
Figure 4.4.1. Relation between the frequency of BCLK and memory (1)
(4) Output enable time [ta(OE)]
(5) Data setup time [tsu(D)]
Output enable time [ta(OE)] must satisfy the following conditional expressions:
(a) Vcc = 3.0 to 3.6 V
• With the Wait option cleared
• With the Wait option selected
Data setup time [tsu(D)] must satisfy the following conditional expressions:
(a) Vcc = 3.0 to 3.6 V
• PM16 = 0 (WR width normal)
• PM16 = 1 (WR width expanded)
ta(OE) < 10
ta(OE) < (m+0.5)
tsu(D) < (n – 0.5)
tsu(D) < n
4000
3500
3000
2500
2000
1500
1000
500
(m = “1” when 1 wait selected, “m = 2” when 2 waits selected, and “m = 3” when 3 waits selected)
*40(ns) = td(BCLK – DB) – th(BCLK – WR)
(n = 1 (no wait), n = 2 (1 wait), n = 3 (2 waits), n = 4 (3 waits))
0
1
3920
2920
1920
920
= (data output delay time) – (WR signal output hold time)
2
1920
1420
920
420
9
10
/(f(BCLK)
page 341 of 354
9
3
/f(BCLK) – 40((ns) = td(DB – WR)
1253
920
587
253
10
10
4
9
9
920
670
420
170
/f(BCLK) – 60(ns) = tac2(RD-DB)
/f(BCLK) – 40(ns) = td(DB – WR)
2) – 60(ns) = tac1(RD-DB)
5
720
520
320
120
6
587
420
253
87
7
491
349
206
63
Access time
8
420
295
170
45
MHz
9
364
253
142
31
10
320
220
120
20
11
284
193
102
11
12
253
170
87
3
13
228
151
74
-3
1 wait
Without wait
2 waits
3 waits
14
206
134
63
-9
15
4. External Buses
187
120
53
-13
170
108
-18
16
45