SAB80C517A-N18 Siemens Semiconductor Group, SAB80C517A-N18 Datasheet - Page 64

• Manufacturer Part Number: SAB80C517A-N18
• Description: 8-Bit CMOS Single-Chip Microcontroller
• Manufacturer: Siemens Semiconductor Group

Notes for page 62:
1) Capacitive loading on ports 0 and 2 may cause spurious noise pulses to be superimposed
2) Capacitive loading on ports 0 and 2 may cause the V
3) I
4) I
5) I
6) I
7) I
Semiconductor Group
on the V
discharging into the port 0 and port 2 pins when these pins make 1-to-0 transitions during
bus operation. In the worst case (capacitive loading > 100 pF), the noise pulse on ALE line
may exceed 0.8 V. 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.
fall below the 0.9 V
EA
PE/SWD
V
or V
XTAL2 driven with t
EA = PE
all other pins are disconnected. I
used (appr. 1 mA).
disabled; XTAL2 driven with t
XTAL1 = N.C.;
EA = PE
als disabled; XTAL2 driven with t
XTAL1 = N.C.
all other pins are disconnected;
active mode: I
idle mode: I
where f
measured at V
PD
CC
CC
CC
CC
AGND
=
(Power down mode) is measured with:
(active mode) is measured with:
Max
(slow down mode) is measured with all output pins disconnected and with all peripher-
SS
(Idle mode) is measured with all output pins disconnected and with all peripherals
RESET
. No certain pin connection for the other pins.
at other frequencies is given by:
= V
OSC
/SWD = V
/SWD = V
OL
= OWE = V
SS
of ALE and ports 1, 3, 4, 5 and 6. The noise is due to external bus capacitance
CC
is the oscillator frequency in MHz. I
= V
; all other pins are disconnected. Hardware Powerdown I
;RESET
CC
CC
(max) = 1.17* f
RESET
CC;
(max) = 1.50* f
CC
SS
= 5 V.
CLCH,
C C
; all other pins are disconnected;
; Port0 = Port7 = Port8 = V
SS
Port0 = Port7 = Port8 = V
= V
specification when the address lines are stabilizing.
;
= V
HWDP
CC
t
CHCL
CC
;
CLCH
;
HWPD
OSC
= V
HWPD
= 5 ns, V
OSC
CC
CLCH,
CC
, t
+ 10
would be slightly higher if a crystal oscillator is
CHCL
= V
(Software Power Down mode); V
+ 10
= V
t
CC
CHCL
IL
= 5 ns, V
CC
63
; Port7 = Port8 = V
= V
; Port0 = Port7 = Port8 =V
= 5 ns, V
SS
CC
CC
CC
+ 0.5 V, V
; XTAL1 = N.C.; XTAL2 = V
;
values are given in mA and
IL
HWPD
= V
OH
IL
SS
on ALE and
= V
SAB 80C517A/83C517A-5
IH
= V
+ 0.5 V, V
SS
= V
CC
CC
+ 0.5 V, V
CC
;
;
RESET
EA = PE/SWD
– 0.5 V; XTAL1 = N.C.;
PSEN
IH
ARef
CC
PD
= V
IH
: OWE =V
;
= V
= V
CC
to momentarily
=V
SS
CC
– 0.5 V;
SS
CC
1994-05-01
= V
;
;
– 0.5 V;
SS
CC
;