M38507F8AFP#U1 Renesas Electronics America, M38507F8AFP#U1 Datasheet - Page 34

• 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
Fig 31. Structure of PWM control register
Fig 32. PWM output timing when PWM register or PWM prescaler is changed
<Notes>
The PWM starts after the PWM function enable bit is set to enable and “L” level is output from the PWM pin.
The length of this “L” level output is as follows:
--------------- - sec
f X
n
---------------------- - sec
2 × f X
(
+
n
IN
(
1
+
)
1
PWM output
PWM register
write signal
PWM prescaler
write signal
IN
Apr 17, 2009
)
b7
When the contents of the PWM register or PWM prescaler have changed,
the PWM output will change from the next period after the change.
(Count source selection bit = 0, where n is the value set in the prescaler)
(Count source selection bit = 1, where n is the value set in the prescaler)
Page 32 of 56
A
T
(Changes “H” term from “A” to “ B”.)
b0
(Changes PWM period from “T” to “T2”.)
PWM control register
(PWMCON : address 001D
B
PWM function enable bit
Count source selection bit
Not used (return “0” when read)
0: PWM disabled
1: PWM enabled
0: f(X
1: f(X
T
IN
IN
) (f(X
)/2 (f(X
CIN
CIN
) at low-speed mode)
)/2 at low-speed mode)
C
T2
16
)
B
T
=
T2
C