m38039g6hsp Renesas Electronics Corporation., m38039g6hsp Datasheet - Page 62

• Manufacturer Part Number: m38039g6hsp
• Description: Single-chip 8-bit Cmos Microcomputer
• Manufacturer: Renesas Electronics Corporation.

3803 Group (Spec.H QzROM version)
Rev.1.10
REJ03B0166-0110
RESET CIRCUIT
To reset the microcomputer, RESET pin should be held at an “L”
level for 16 cycles or more of X
returned to an “H” level (the power source voltage should be
between 1.8 V and 5.5 V, and the oscillation should be stable),
reset is released. After the reset is completed, the program starts
from the address contained in address FFFD
and address FFFC
input voltage is less than 0.29 V for V
Fig 56. Reset circuit example
Fig 57. Reset sequence
Address
RESET
Internal
SYNC
reset
Data
X
IN
φ
Nov 14, 2005
16
(low-order byte). Make sure that the reset
X
IN
: 10.5 to 18.5 clock cycles
RESET
RESET
Page 62 of 91
IN
. Then the RESET pin is
CC
?
Notes 1: The frequency relation of f(X
of 1.8 V.
Example at V
V
V
CC
CC
?
16
2: The question marks (?) indicate an undefined state that depends on the previous state.
(high-order byte)
Power source voltage
detection circuit
?
CC
?
= 5 V
?
?
?
IN
) and f(φ) is f(X
?
RESET
FFFC
V
0 V
0 V
CC
IN
AD
) = 8 • f(φ).
1.8 V
L
FFFD
AD
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
0.29 V or less
H
AD
H
,
L
Reset address from the
vector table.