Datasheet

&3,
Data Sheet 38 1999-07

Parameter Interpretation
The parameters listed in the following partly represent the characteristics of the C161PI
and partly its demands on the system. To aid in interpreting the parameters right, when
evaluating them for a design, they are marked in column “Symbol”:
CC (Controller Characteristics):
The logic of the C161PI will provide signals with the respective timing characteristics.
SR (System Requirement):
The external system must provide signals with the respective timing characteristics to
the C161PI.
DC Characteristics (Standard Supply Voltage Range)
(Operating Conditions apply)
Parameter Symbol Limit Values Unit Test Condition
min. max.
Input low voltage XTAL1,
P3.0, P3.1, P6.5, P6.6, P6.7
9
IL1
SR – 0.5 0.3 V
DD
V–
Input low voltage
(TTL)
9
IL
SR – 0.5 0.2 9
DD
– 0.1
V–
Input low voltage
(Special Threshold)
9
ILS
SR – 0.5 2.0 V –
Input high voltage RSTIN
9
IH1
SR 0.6 9
DD
9
DD
+
0.5
V–
Input high voltage XTAL1,
P3.0, P3.1, P6.5, P6.6, P6.7
9
IH2
SR 0.7 9
DD
9
DD
+
0.5
V–
Input high voltage
(TTL)
9
IH
SR 0.2 9
DD
+ 0.9
9
DD
+
0.5
V–
Input high voltage
(Special Threshold)
9
IHS
SR 0.8 9
DD
- 0.2
9
DD
+
0.5
V–
Input Hysteresis
(Special Threshold)
HYS 400 – mV –
Output low voltage
(PORT0, PORT1, Port 4, ALE,
RD
, WR, BHE, CLKOUT,
RSTOUT
)
9
OL
CC – 0.45 V ,
OL
= 2.4 mA
Output low voltage
(P3.0, P3.1, P6.5, P6.6, P6.7)
9
OL2
CC – 0.4 V ,
OL2
= 3 mA