MITSUBISHI MICROCOMPUTERS
M37754M8C-XXXGP, M37754M8C-XXXHP
M37754S4CGP, M37754S4CHP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
<NOTE> External bus timing when internal memory area is accessed (2-φ access) in high-speed
running
(VCC = 5 V±10 %, VSS = 0 V, Ta = –20 to 85 °C, f(XIN) ≤ 40 MHz when the clock source select bit = “0” )
f (XIN) = 40 MHz
Bus timing
data formula
Symbol
Parameter
Unit
Min.
Max.
1 × 109
f(XIN)
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
tw(φH), tw(φL)
td(φ1–WR)
td(φ1–RD)
φ high-level pulse width, φ low-level pulse width
5
– 20
___
WR output delay time
–7
–7
5
12
12
___
RD output delay time
1 × 109
– 20
___
__
tw(WR)
WR low-level pulse width
f(XIN)
1 × 109
f(XIN)
2 × 109
f(XIN)
2 × 109
f(XIN)
2 × 109
f(XIN)
2 × 109
f(XIN)
2 × 109
f(XIN)
2 × 109
f(XIN)
2 × 109
f(XIN)
___
__
tw(RD)
RD low-level pulse width
5
– 20
td(A–WR)
Address output delay time
Address output delay time
Address output delay time
25
25
10
25
25
10
25
25
10
– 25
td(A–RD)
– 25
td(A–ALE)
– 40
____
td(BHE–WR)
td(BHE–RD)
td(BHE–ALE)
td(CS–WR)
td(CS–RD)
td(CS–ALE)
BHE output delay time
– 25
____
BHE output delay time
– 25
____
BHE output delay time
– 40
Chip select output delay time
Chip select output delay time
Chip select output delay time
Data output delay time
– 25
2 × 109
f(XIN)
2 × 109
f(XIN)
– 25
– 40
————
t
t
d(WR–DLQ/DHQ)
35
1 × 109
+ 5
pxz(WR–DLZ/DHZ) Floating start delay time
30
4
f(XIN)
————
td(ALE–WR)
td(ALE–RD)
tw(ALE)
ALE output delay time
ALE output delay time
ALE pulse width
————
4
1 × 109
– 15
10
10
10
10
10
10
10
15
0
f(XIN)
1 × 109
f(XIN)
1 × 109
f(XIN)
1 × 109
f(XIN)
1 × 109
f(XIN)
1 × 109
f(XIN)
1 × 109
f(XIN)
1 × 109
f(XIN)
th(WR–A)
Address hold time
Address hold time
– 15
th(RD–A)
– 15
____
td(WR–BHE)
td(RD–BHE)
td(WR–CS)
td(RD–CS)
BHE hold time
– 15
____
BHE hold time
– 15
Chip select hold time
Chip select hold time
Data hold time
– 15
– 15
t
t
h(WR–DLQ/DHQ)
– 10
pzx(WR–DLZ/DHZ) Floating release delay time
————
: f(XIN) ≤ 20 MHz when the clock source select bit = “1”.
: f(XIN) = 20 MHz when the clock source select bit = “1”.
108
RENESAS [ RENESAS TECHNOLOGY CORP ]
