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參數(shù)資料
| 型號(hào)： | S83C654IFPN |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | CMOS single-chip 8-bit microcontroller |
| 中文描述： | CMOS單芯片8位微控制器 |
| 文件頁數(shù)： | 12/28頁 |
| 文件大?。?/td> | 480K |
| 代理商： | S83C654IFPN |
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Philips Semiconductors
Product specification
87C654
CMOS single-chip 8-bit microcontroller
1996 Aug 16
12
NOTES FOR DC ELECTRICAL CHARACTERISTICS:
1. The input threshold voltage of P1.6 and P1.7 (SIO1) meets the I
2
C specification, so an input voltage below 0.3V
CC
will be recognized as a
logic 0 while an input voltage above 0.7V
will be recognized as a logic 1.
2. Capacitive loading on ports 0 and 2 may cause spurious noise to be superimposed on the V
s of ALE and ports 1 and 3. The noise is due
to external bus capacitance discharging into the port 0 and port 2 pins when these pins make 1-to-0 transitions during bus operations. In the
worst cases (capacitive loading > 100pF), the noise pulse on the ALE pin may exceed 0.8V. In such cases, it may be desirable to qualify
ALE with a Schmitt Trigger, or use an address latch with a Schmitt Trigger STROBE input. I
OL
can exceed these conditions provided that no
single output sinks more than 5mA and no more than two outputs exceed the test conditions.
3. Under steady state (non-transient) conditions, I
OL
must be externally limited as follows: Maximum I
OL
= 10mA per port pin; Maximum
I
OL
= 26mA total for Port 0; Maximum I
OL
= 15mA total for Ports 1, 2, and 3; Maximum I
OL
= 71mA total for all output pins. If I
OL
exceeds the
test conditions, V
OL
may exceed the related specification. Pins are not guaranteed to sink current greater than the listed test conditions.
4. Capacitive loading on ports 0 and 2 may cause the V
OH
on ALE and PSEN to momentarily fall below the 0.9V
CC
specification when the
address bits are stabilizing.
5. Pins of ports 1 , 2, and 3 source a transition current when they are being externally driven from 1 to 0. The transition current reaches its
maximum value when V
IN
is approximately 2V.
6. See Figures 9 through 11 for I
CC
test conditions.
7. The operating supply current is measured with all output pins disconnected; XTAL1 driven with t
r
= t
f
= 10ns;
V
IL
= V
SS
+ 0.5V; V
IH
= V
CC
–0.5V; XTAL2 not connected; EA = RST = Port 0 = P1.6 = P1.7 = V
CC
; f
CLK
= 16MHz. See Figure 9.
8. The idle mode supply current is measured with all output pins disconnected; XTAL1 driven with t
r
= t
f
= 10ns; V
IL
= V
SS
+ 0.5V;
V
= V
–0.5V; XTAL2 not connected; Port 0 = P1.6 = P1.7 = V
; EA = RST = V
; f
= 16MHz. See Figure 10.
9. The power-down current is measured with all output pins disconnected; XTAL2 not connected; Port 0 = P1.6 = P1.7 = V
CC
;
EA = RST = V
SS
. See Figure 11.
10.2V
≤
V
PD
≤
V
CC
max.
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