M38517F8FP Renesas Electronics America, M38517F8FP Datasheet - Page 46
M38517F8FP
Manufacturer Part Number
M38517F8FP
Description
MCU 8-Bit 740 CISC 32KB Flash 5V 42-Pin SSOP
Manufacturer
Renesas Electronics America
Datasheet
1.M38514E6FP.pdf
(93 pages)
Specifications of M38517F8FP
Package
42SSOP
Family Name
740
Maximum Speed
8 MHz
Ram Size
1 KB
Program Memory Size
32 KB
Operating Supply Voltage
5 V
Data Bus Width
8 Bit
Program Memory Type
Flash
Number Of Programmable I/os
34
Interface Type
I2C-BUS
On-chip Adc
5-chx10-bit
Operating Temperature
-20 to 85 °C
Number Of Timers
4
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3851 Group
RESET CIRCUIT
To reset the microcomputer, RESET pin must be held at an “L”
level for 20 cycles or more of X
to an “H” level (the power source voltage must be between 2.7 V
and 5.5 V, and the oscillation must be stable), reset is released.
After the reset is completed, the program starts from the address
contained in address FFFD
FFFC
less than 0.54 V for V
Fig. 50 Reset sequence
Rev.1.01
16
(low-order byte). Make sure that the reset input voltage is
R E S E T
R E S E T
A d d r e s s
D a t a
S Y N C
X
I N
Oct 15, 2003
O U T
(Built-in 24 KB or more ROM)
CC
of 2.7 V.
X
I N
page 44 of 89
16
: 8 t o 1 3 c l o c k c y c l e s
IN
. Then the RESET pin is returned
(high-order byte) and address
?
?
?
N o t e s
? ?
1 : T h e f r e q u e n c y r e l a t i o n o f f ( X
2 : T h e q u e s t i o n m a r k s ( ? ) i n d i c a t e a n u n d e f i n e d s t a t e t h a t d e p e n d s o n t h e p r e v i o u s s t a t e .
3 : A l l s i g n a l s e x c e p t X
? ?
?
?
Fig. 49 Reset circuit example
I N
?
a n d
R E S E T
FFFC
R E S E T
R E S E T
I N
) a n d f ( ) i s f ( X
A D
a r e i n t e r n a l s .
L
F F F D
V
V
C C
C C
AD
I N
) = 8
P o w e r s o u r c e
v o l t a g e
Reset input
voltage
H
A D
•
0V
0V
N o t e : R e s e t r e l e a s e v o l t a g e ; V c c = 2 . 7 V
f ( ) .
H
,
L
R e s e t a d d r e s s f r o m t h e v e c t o r t a b l e .
P o w e r s o u r c e
v o l t a g e d e t e c t i o n
c i r c u i t
P o w e r o n
( N o t e )
0 . 2 V
C C
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