M38039GCHSP#U0 Renesas Electronics America, M38039GCHSP#U0 Datasheet - Page 68

• Manufacturer Part Number: M38039GCHSP#U0
• Description: IC 740/3803 MCU QZROM 64DIP
• Manufacturer: Renesas Electronics America
• Series: 740/38000r

Specifications of M38039GCHSP#U0

• Core Processor: 740
• Core Size: 8-Bit
• Speed: 16.8MHz
• Connectivity: SIO, UART/USART
• Peripherals: LED, PWM, WDT
• Number Of I /o: 56
• Program Memory Size: 48KB (48K x 8)
• Program Memory Type: QzROM
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 64-SDIP (0.750", 19.05mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

3803 Group (Spec.H QzROM version)
REJ03B0166-0113 Rev.1.13
Page 66 of 100
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 61. Reset circuit example
Fig 62. Reset sequence
Address
RESET
Internal
SYNC
reset
Data
X
IN
φ
16
(low-order byte). Make sure that the reset
X
IN
: 10.5 to 18.5 clock cycles
RESET
RESET
IN
. Then the RESET pin is
CC
Aug 21, 2009
?
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
0.29 V or less
H
AD
H
,
L
Reset address from the
vector table.