User`s manual

User’s Manual RabbitCore RCM2200 Specifications A–7
Table A –4 lists the parameters shown in these figures and provides minimum or measured values.
A.3 Rabbit 2000 DC Characteristics
Table A –5 outlines the DC characteristics for the Rabbit 2000 at 5.0 V over the recommended operating tem-
perature range from T
a
= –40°C to +85°C, V
DD
= 4.5 V to 5.5 V.
Table A –4: Memory and External I/O Read/Write Parameters
Parameter Description Value
Read Parameters
T
adr
Time from CPU clock rising
edge to address valid
Max.
7 ns @ 20 pF, 5 V (10 ns @ 3.3 V)
14 ns @ 70 pF, 5 V (19 ns @ 3.3 V)
T
setup
Data read setup time Min. 2 ns @ 5 V (3 ns @ 3.3 V)
T
hold
Data read hold time Min. 0 ns
Write Parameters
T
adr
Time from CPU clock rising
edge to address valid
Max.
7 ns @ 20 pF, 5 V (10 ns @ 3.3 V)
14 ns @ 70 pF, 5 V (19 ns @ 3.3 V)
T
hold
Data write hold time from /WEx
or /IOWR
Min. ½ CPU clock cycle
Table A –5: 5.0 Volt DC Characteristics
Symbol Parameter Test Conditions Min Typ Max Units
I
IH
Input Leakage High
V
IN
= V
DD
, V
DD
= 5.5
V
10 µA
I
IL
Input Leakage Low
(no pull-up)
V
IN
= V
SS
, V
DD
= 5.5 V -10 µA
I
OZ
Output Leakage (no pull-
up)
V
IN
= V
DD
or V
SS
,
V
DD
= 5.5 V
-10 10 µA
V
IL
CMOS Input Low Voltage 0.3 x V
DD
V
V
IH
CMOS Input High Voltage 0.7 x V
DD
V
V
T
CMOS Switching
Threshold
V
DD
= 5.0 V, 25°C2.4V
V
OL
CMOS Output Low
Voltage
I
OL
= See Table A–6
(sinking)
V
DD
= 4.5 V
0.2 0.4 V
V
OH
CMOS Output High
Voltage
I
OH
= See Table A–6
(sourcing)
V
DD
= 4.5 V
0.7 x V
DD
4.2 V