M37542F8FP Renesas Electronics America, M37542F8FP Datasheet - Page 66

• Manufacturer Part Number: M37542F8FP
• Description: IC 740 MCU FLASH 32K 36SSOP
• Manufacturer: Renesas Electronics America
• Series: 740/38000r

Specifications of M37542F8FP

• Core Processor: 740
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SIO, UART/USART
• Peripherals: POR, WDT
• Number Of I /o: 29
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 36-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

7542 Group
Fig. 82 Block diagram of internal clock generating circuit (for ceramic resonator)
Fig. 83 Block diagram of internal clock generating circuit (for RC oscillation)
Rev.3.03
REJ03B0006-0303
Interrupt disable flag l
Jul 11, 2008
Interrupt request
X
Interrupt disable flag l
OUT
On-chip oscillator
On-chip oscillator
Q
Q
Interrupt request
On-chip oscillator mode
R
S
R
S
RING
X
IN
Delay
Note:
Reset
(Note)
Page 64 of 117
STP instruction
STP instruction
Although a feed-back resistor exists on-chip, an external feed-back resistor
may be needed depending on conditions.
X
Reset
1/2
OUT
X
Clock division ratio selection bits
Middle-, high-, double-speed mode
IN
1/2
1/4
On-chip
oscillator
mode
1/4
Clock division ratio selection bits
Middle-, high-, double-speed mode
1/16
1/2
1/16
R
OSC
R
R
R
1/2
OSC
OSC
OSC
/128
1/4
/2
/1
/8
instruction
R
Double-speed mode
OSC
R
R
On-chip oscillator division
ratio selection bits
R
instruction
High-speed mode
OSC
OSC
OSC
1/4
Middle-speed mode
/128
WIT
On-chip oscillator
mode
/2
/1
1/2
/8
Double-speed mode
WIT
High-speed mode
On-chip oscillator division
ratio selection bits
S
R
Clock division
ratio selection bits
On-chip oscillator
mode
1/2
Prescaler 1
R
S
Q
Q
Middle-speed mode
Prescaler 1
Q
Clock division
ratio selection bits
Timer 1
S
R
STP instruction
Timing φ
(Internal
clock)
Q
RESET
S
R
Timer 1
Timing φ
(Internal clock)
STP instruction
RESET