Datasheet

Page 60
78fo5002,10.luJ12.1.veR
5. Electrical Characteristics (M32C/85)
)T58/C23M,58/C23M(puorG58/C23M
Figure 5.4 VCC1=VCC2=5V Timing Diagram (2)
BCLK
CSi
ADi
RD
-5ns.min
BHE
ADi
/DBi
26ns.min
t d(BCLK-RD)
t su(DB-BCLK)
t ac2(RD-DB)
t dz(RD-AD)
8ns.max
ALE
t d(BCLK-ALE)
18ns.max
t d(BCLK-CS)
t d(AD-ALE)
t h(ALE-AD)
t h(BCLK-RD)
t h(RD-AD)
t h(RD-DB)
t d(BCLK-AD)
t h(BCLK-CS)
t h(RD-CS)
t h(BCLK-ALE)
tcyc
Memory Expansion Mode and Microprocessor Mode
(when accessing an external memory space with the multiplexed bus)
-5ns.min
BCLK
CSi
ADi
BHE
ADi
/DBi
WR,WRL,
WRH
t h(WR-CS)
ALE
t h(BCLK-WR)
t d(DB-WR)
18ns.max
t ac2(AD-DB)
[ Read Timing ] (2φ +2φ Bus Cycle)
Address
(1)
(1)
(1)
t d(AD-ALE) =(tcyc/2 x n-20)ns.min (if external bus cycle is aφ + bφ, n=a)
t
h(ALE-AD) =(tcyc/2 x n-10)ns.min (if external bus cycle is aφ + bφ, n=a)
t
h(RD-AD) =(tcyc/2-10)ns.min, t h(RD-CS) =(tcyc/2-10)ns.min
t
ac2(RD-DB) =(tcyc/2 x m-35)ns.max (if external bus cycle is aφ + bφ, m=(b x 2)-1)
t
ac2(AD-DB) =(tcyc/2 x p-35)ns.max (if external bus cycle is aφ + bφ, p={(a+b-1) x 2}+1)
NOTES:
1. Varies with operation frequency:
Data input
Address
(1)
[ Write Timing ] (2φ +2φ Bus Cycle)
Address
Data output
Address
(2)
(2)
t d(AD-ALE) =(tcyc/2 x n - 20)ns.min
(if external bus cycle is aφ + bφ, n=a)
t
h(ALE-AD) =(tcyc/2 x n -10)ns.min
(if external bus cycle is aφ + bφ, n=a)
t
h(WR-AD) =(tcyc/2-10)ns.min,
t
h(WR-CS) =(tcyc/2-10)ns.min, t h(WR-DB) =(tcyc/2-10)ns.min
t
d(DB-WR) =(tcyc/2 x m-25)ns.min
(
if external bus c
y
cle is a
φ
+ b
φ
, m=
(
b x 2
)
-1
)
NOTES:
2. Varies with operation frequency:
Measurement Conditions:
• V
CC1 =V CC2 =4.2 to 5.5V
• Input high and low voltage:
V
IH =2.5V, V IL =0.8V
• Output high and low voltage:
V
OH =2.0V, V OL =0.8V
Vcc 1 =Vcc 2 =5V
-3ns.min
(1)
t h(BCLK-AD)
-3ns.min
0ns.min
(1)
18ns.max
-2ns.min
18ns.max
18ns.max
t h(WR-DB)
(2)
t h(BCLK-AD)
-3ns.min
t h(WR-AD)
18ns.max
t d(BCLK-WR)
18ns.max
t d(BCLK-AD)
t d(AD-ALE)
(2)
t d(BCLK-CS)
18ns.max
t d(BCLK-ALE)
-2ns.min
t h(BCLK-ALE)
tcyc
(2)
t h(BCLK-CS)
-3ns.min
t h(ALE-AD)
(2)
tcyc=
10
f
(BCLK)
9