HD64F36077GHV Renesas Electronics America, HD64F36077GHV Datasheet - Page 306

• Manufacturer Part Number: HD64F36077GHV
• Description: 16BIT MCU FLASH 56K, SMD, LQFP64
• Manufacturer: Renesas Electronics America

Specifications of HD64F36077GHV

• No. Of I/o's: 47
• Ram Memory Size: 4KB
• Cpu Speed: 20MHz
• No. Of Timers: 4
• Digital Ic Case Style: LQFP
• Supply Voltage Range: 4.5V
• Core Size: 16bit
• Program Memory Size: 56KB
• Oscillator Type: External Only
• Controller Family/series: H8/300H
• Peripherals: ADC
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Section 15 14-Bit PWM
15.4
When using the 14-bit PWM, set the registers in this sequence:
1. Set the PWM bit in the port mode register 1 (PMR1) to set the P11/PWM pin to function as a
2. Set the PWCR0 bit in PWCR to select a conversion period of either.
3. Set the output waveform data in PWDRU and PWDRL. Be sure to write byte data first to
One conversion period consists of 64 pulses, as shown in figure 15.2. The total high-level width
during this period (T
expressed as follows:
where tφ is the period of PWM clock input: 2/φ (bit PWCR0 = 0) or 4/φ (bit PWCR0 = 1).
If the data value in PWDRU and PWDRL is from H'FFC0 to H'FFFF, the PWM output stays high.
When the data value is H'C000, T
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REJ09B0216-0100
PWM output pin.
PWDRL and then to PWDRU. When the data is written in PWDRU, the contents of these
registers are latched in the PWM waveform generator, and the PWM waveform generation
data is updated in synchronization with internal signals.
T
T
Operation
H
H
= (data value in PWDRU and PWDRL + 64) × tφ/2
= 64 × tφ/2 = 32 tφ
H
t H1
) corresponds to the data in PWDRU and PWDRL. This relation can be
T H = t H1 + t H2 + t H3 + ... + t H64
t f1 = t f2 = t f3 = ... = t f64
Figure 15.2 Waveform Output by 14-Bit PWM
t f1
t H2
H
is calculated as follows:
t f2
Conversion period
t H3
t H63
t f63
t H64
t f64