em78p131a ELAN Microelectronics Corp, em78p131a Datasheet - Page 40

• Manufacturer Part Number: em78p131a
• Description: 8-bit Microcontroller With Otp Rom
• Manufacturer: ELAN Microelectronics Corp

EM78P131A
8-Bit Microcontroller with OTP ROM
36 •
Note: These
N
Symbol
ote: The
ICC1
ICC2
ICC3
IC
ISB1
ISB2
Symbol
*
*
*
*
Tdelay
Thold
Twdt1
Twdt2
Twdt3
Twdt4
Tdrh
C4
Dclk
Tset
Tins
Ttcc
The
*
*
*
*
*
Trst
8.2
*
N = selected prescaler ratio
Tw t1: The Option word (SUT1, SUT0) is
Tw
Tw t3: The Option word (S
Twdt4:
d
dt2:
d
W
s
e parameters are theoretical values and h
atchdog Timer duration is determ
Power down current
Power
Operat
at two clocks (VDD=3V)
Operatin
at tw
Operating supply current at two
clocks (VDD=5.0V)
Operating supply current
at two clocks (VDD=5.0V)
Ta=25°C, VDD=5V
length is the same as set-up tim
The Option word (SUT1, SUT0) is used to
length is the sam
length is the same as set-up time
The
length is the same as set-up time (72ms).
parameters are theoretical values and have
Input CLK duty c
Instruction cycle time
(CLKS="0")
TCC input period
/RESET
Watchdog timer period
Watchdog timer period
Watchdog timer period
Watchdog timer period
Input pin setup time
Device reset hold time
Input pin hold time
Output pin delay time
o clocks (VDD=3V)
Option word (SUT1, SUT0) is used to define the oscillator set-up time. In Crystal mode the WDT time-out
ing supply current
down current
g supply current
Parameter
Parameter
A
pulse width
C Char
e as set-up time (4.5ms).
UT1, SUT0) is used to de
ycle
± 5%, VSS=0V
acteristics
ined by
e
(18ms).
(288ms).
used to de
Ta = 25°
SUT1, UT0=1, 1
SUT1
SU
SUT1, S
SUT1,
All input and I/
Output pin floating,
WDT disabled
All input and I/O pins at VDD,
Output pin floating,
WDT enabled
/RESET= 'High', Fosc=32kHz
(Crystal type, CLKS="0"),
Output pin floating,
WDT disabled
/RESET= 'High', Fosc=32kHz
(Crystal type, CLKS="0"),
Output pin floating,
WDT enabled
/RESET= 'High', Fosc=4 MHz
(Crystal type,
Output pin flo
/RESET= 'Hi
(C
O
utput pin floating
Cloa
Conditions
Crys
ave n
Option Code (Bit 6, Bit 5)
rystal type, CLKS="0"),
T1, S
Ta
Ta
Ta =
Ta =
Ta =
RC
, S
de
S
=
=
S
d=20pF
tal type
not been tested.
C, Crysta
ot been tested.
fine the oscillato
fine the oscillator se
fine the oscillator set-
-
-
-
-
type
UT0=1,1
UT0=1
UT0=0,1
UT0=0,0
25°C
25°C
25°C
25°C
25°C
Condition
(This specification is subject to change without further notice)
gh', Fosc=10 MHz
ating
CLKS="0"),
O pins at VDD,
,0
l,
r set-up time. In Crystal m
(Tins+20)/N
17.6~
Product Specification (V1.2) 09.16.2009
17.6-30%
288~30%
4.5+30%
72~30%
t-up time. In Crystal mode the WDT time-o t
up time. In
2000
Min.
10
500
45
-
-
-
0
30%
Min.
*
15
-
-
-
-
-
Crys
Typ.
17.6
17.6
288
4.5
50
72
20
50
tal
0
-
-
-
-
Typ.
15
19
mode
-
-
-
-
ode
17.6
17.6
288+3
4.5+
72+30
the
the
Max.
Max.
DC
D
55
2.0
4.0
+30%
+30%
10
30
35
-
-
-
-
-
1
C
30%
WDT
WDT
0%
%
time
tim
Unit
mA
mA
Unit
μA
μA
μA
μA
m
m
m
m
ms
e-ou
ns
ns
ns
ns
ns
ns
ns
%
-ou
s
s
s
s
u
t
t