M38507F8AFP#U1 Renesas Electronics America, M38507F8AFP#U1 Datasheet - Page 38

• Manufacturer Part Number: M38507F8AFP#U1
• Description: IC 740/3850 MCU FLASH 42SSOP
• Manufacturer: Renesas Electronics America
• Series: 740/38000r

Specifications of M38507F8AFP#U1

• Core Processor: 740
• Core Size: 8-Bit
• Speed: 12.5MHz
• Connectivity: SIO, UART/USART
• Peripherals: PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 9x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 42-SSOP
• Package: 42SSOP
• Family Name: 740
• Maximum Speed: 12.5 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 34
• Interface Type: UART
• On-chip Adc: 9-chx10-bit
• Number Of Timers: 4
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

3850 Group (Spec.A QzROM version)
Rev.2.13
REJ03B0125-0213
RESET CIRCUIT
To reset the microcomputer, RESET pin must be held at an “L”
level for 20 cycles or more of X
returned to an “H” level (the power source voltage must be
between 1.8 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
and address FFFC
input voltage is less than 0.28 V for V
Fig 40. Reset sequence
RESET
RESET
Address
Data
SYNC
X
φ
IN
OUT
Apr 17, 2009
16
X
(low-order byte). Make sure that the reset
IN
: 8 to 13 clock cycles
Page 36 of 56
IN
?
. Then the RESET pin is
CC
of 1.8 V.
?
16
?
Notes1: The frequency relation of f(X
(high-order byte)
?
2: The question marks (?) indicate an undefined state that depends on the previous state.
3: All signals except X
?
?
?
Fig 39. Reset circuit example
IN
?
and RESET are internals.
RESET
RESET
FFFC
IN
) and f(φ) is f(X
AD
L
FFFC
V
AD
IN
V
Note : Reset release voltage; V
) = 2 × f(φ).
CC
CC
H
AD
Power
source
voltage
Reset
input
voltage
H,L
0V
0V
Reset address from the vector table.
Power source
voltage detection
circuit
Poweron
(Note)
0.16V
CC
CC
= 1.8 V