M32C80 Datasheet, PDF (312/352 Pages) Renesas Technology Corp – 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES

M32C/80 Group
23. Electrical Characteristics
Memory Expansion Mode and Microprocessor Mode
(when accessing an external memory space with the multiplexed bus)
[ Read Timing ] (2φ +2φ Bus Cycle)
Vcc1=Vcc2=5V
BCLK
ALE
CSi
ADi
/DBi
ADi
BHE
RD
td(BCLK-ALE)
18ns.max
th(BCLK-ALE)
-5ns.min
td(BCLK-CS)
18ns.max
td(AD-ALE)⁽¹⁾
td(BCLK-AD)
18ns.max
tcyc
th(BCLK-CS)
-3ns.min
th(RD-CS)⁽¹⁾
th(ALE-AD) ⁽¹⁾
tsu(DB-BCLK) 26ns.min
Address
tdz(RD-AD)
8ns.max
tac2(RD-DB)⁽¹⁾
Data input
Address
th(RD-DB) ^th(BCLK-AD)
0ns.min
-3ns.min
(1)
tac2(AD-DB)
td(BCLK-RD)
18ns.max
th(BCLK-RD)
-5ns.min
th(RD-AD) ⁽¹⁾
NOTE:
1. Varies with operation frequency:
td(AD-ALE)=(tcyc/2 x n-20)ns.min (if external bus cycle is aφ + bφ, n=a)
th(ALE-AD)=(tcyc/2 x n-10)ns.min (if external bus cycle is aφ + bφ, n=a)
th(RD-AD)=(tcyc/2-10)ns.min, th(RD-CS)=(tcyc/2-10)ns.min
tac2(RD-DB)=(tcyc/2 x m-35)ns.max (if external bus cycle is aφ + bφ, m=(b x 2)-1)
tac2(AD-DB)=(tcyc/2 x p-35)ns.max (if external bus cycle is aφ + bφ, p={(a+b-1) x 2}+1)
[ Write Timing ] (2φ +2φ Bus Cycle)
BCLK
ALE
td(BCLK-ALE)
18ns.max
th(BCLK-ALE)
-5ns.min
td(BCLK-CS)
tcyc
18ns.max
CSi
td(AD-ALE)⁽²⁾
th(ALE-AD)⁽²⁾
(2)
th(WR-CS)
th(BCLK-CS)
-3ns.min
ADi
/DBi
ADi
BHE
WR,WRL,
WRH
Address
td(BCLK-AD)
18ns.max
Data output
Address
td(DB-WR)⁽²⁾
th(WR-DB)⁽²⁾
th(BCLK-AD)
-3ns.min
td(BCLK-WR)
18ns.max
th(BCLK-WR)
-5ns.min
th(WR-AD)⁽²⁾
NOTE:
2. Varies with operation frequency:
td(AD-ALE)=(tcyc/2 x n - 20)ns.min
(if external bus cycle is aφ + bφ, n=a)
th(ALE-AD)=(tcyc/2 x n -10)ns.min
(if external bus cycle is aφ + bφ, n=a)
th(WR-AD)=(tcyc/2-10)ns.min,
th(WR-CS)=(tcyc/2-10)ns.min, th(WR-DB)=(tcyc/2-10)ns.min
td(DB-WR)=(tcyc/2 x m-25)ns.min
(if external bus cycle is aφ + bφ, m=(b x 2)-1)
Figure 23.3 VCC1=VCC2=5V Timing Diagram (2)
Measurement Conditions:
• VCC1=VCC2=4.2 to 5.5V
• Input high and low voltage:
VIH=2.5V, VIL=0.8V
• Output high and low voltage:
VOH=2.0V, VOL=0.8V
tcyc= ¹⁰⁹
f(BCLK)
Rev. 1.00 Nov. 01, 2005 ^{Page 293} of 330
REJ09B0271-0100