M37544G2AGP#U0 Renesas Electronics America, M37544G2AGP#U0 Datasheet - Page 45

• Manufacturer Part Number: M37544G2AGP#U0
• Description: IC 740 MCU OTP 8K 32LQFP
• Manufacturer: Renesas Electronics America
• Series: 740/38000r

Specifications of M37544G2AGP#U0

• Core Processor: 740
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SIO, UART/USART
• Peripherals: WDT
• Number Of I /o: 25
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: QzROM
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 6x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

REJ03B0108-0103
page 43 of 72
7544 Group (QzROM version)
Fig. 47 Block diagram of internal clock generating circuit (for ceramic/quartz-crystal resonator)
Fig. 48 Block diagram of internal clock generating circuit (for RC oscillation)
Interrupt disable flag l
X
Interrupt disable flag l
Interrupt request
OUT
Interrupt request
Note: Although a feed-back resistor exists on-chip, an external feed-back resistor may be needed
Q
Rev.1.03
On-chip oscillator mode
On-chip oscillator
S
R
depending on conditions.
Delay
Q
X
IN
S
R
Reset
STP instruction
On-chip oscillator
(Note)
RING
Mar 31, 2009
Reset
X
STP instruction
IN
X
OUT
Clock division ratio selection bit
Middle-, high-, low-speed mode
On-chip
oscillator
mode
RING
Clock division ratio selection bit
Middle-, high-, low-speed mode
1/8
1/2
Double-speed mode
On-chip oscillator mode
1/8
High-speed mode
instruction
1/2
Double-speed mode
On-chip oscillator mode
High-speed mode
instruction
1/4
WIT
1/4
WIT
S
R
1/2
Clock division
ratio selection bit
Middle-speed mode
Q
R
S
1/2
Clock division
ratio selection bit
Middle-speed mode
Q
Q
Prescaler 1
S
R
Q
Prescaler 1
S
R
STP instruction
STP instruction
Timing φ
(Internal clock)
Timer 1
Timing φ
(Internal clock)
Timer 1
RESET
RESET