參數(shù)資料
型號(hào)： SAB80C515A-N18
廠商： SIEMENS A G
元件分類(lèi)： 微控制器/微處理器
英文描述： 8-Bit CMOS Single-Chip Microcontroller
中文描述： 8-BIT, 18 MHz, MICROCONTROLLER, PQCC68
封裝： PLASTIC, LCC-68
文件頁(yè)數(shù)： 46/57頁(yè)
文件大?。?/td> 899K
代理商： SAB80C515A-N18
SAB 80C515A/83C515A-5
Semiconductor Group
45
Notes
for page 44:
1) Capacitive loading on ports 0 and 2 may cause spurious noise pulses to be superimposed
on the
V
OL
of ALE and ports 1, 3, 4 and 5. 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 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.
2) Capacitive loading on ports 0 and 2 may cause the
V
OH
on ALE and PSEN to momentarily
fall
below the
0.9
V
CC
specification when the address lines are stabilizing.
3)
I
PD
(Software Power Down Mode) is measured under following conditions:
EA = RESET =
V
CC
; Port0 = Port6 =
V
CC
; XTAL1 = N.C.; XTAL2 =
V
SS
;
PE/SWD =
V
SS
; HWPD =
V
CC
; V
AGND
=
V
SS
;
V
ARef
=
V
CC
; all other pins are
disconnected.
I
PD
(Hardware Power Down Mode): independent of any particular pin connection.
4)
I
CC
(active mode) is measured with:
XTAL2 driven with
t
CLCH
,
t
CHCL
= 5 ns,
V
IL
=
V
SS
+ 0.5 V,
V
IH
=
V
CC
– 0.5 V; XTAL1 = N.C.;
EA = PE/SWD =
V
CC
; Port0 = Port6 =
V
CC
; HWPD =
V
CC
; RESET =
V
SS
;
all other pins are disconnected.
I
CC
would be slightly higher if a crystal oscillator is used (ap-
pr. 1 mA).
5)
I
CC
(Idle mode) is measured with all output pins disconnected and with all peripherals dis-
abled; XTAL2 driven with
t
CLCH
,
t
CHCL
= 5 ns,
V
IL
=
V
SS
+ 0.5 V,
V
IH
=
V
CC
– 0.5 V; XTAL1
= N.C.; RESET =
V
CC
; HWPD =
V
CC
; Port0 = Port6 =
V
CC
; EA = PE/SWD =
V
SS;
all other
pins are disconnected;
6)
I
CC
(slow down mode) is measured with all output pins disconnected and with all peripherals
disabled;
XTAL2 driven with
t
CLCH
,
t
CHCL
= 5 ns,
V
IL
=
V
SS
+ 0.5 V,
V
IH
=
V
CC
– 0.5 V; XTAL1 =
N.C.; RESET =
V
CC
; HWPD =
V
CC
; Port6 =
V
CC
; EA = PE/SWD =
V
SS
; all other pins are
disconnected;
7) I
CC
Max
at other frequencies is given by:
active mode:I
CC
(max) = 1.5
*
f
OSC
+ 8
idle mode:I
CC
(max)= 0.4
*
f
OSC
+ 7
where f
OSC
is the oscillator frequency in MHz. I
CC
values are given in mA and
measured at V
CC
= 5 V.
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