M0516ZAN Nuvoton Technology Corporation of America, M0516ZAN Datasheet - Page 194

• Manufacturer Part Number: M0516ZAN
• Description: IC MCU 32BIT 64KB FLASH 33QFN
• Manufacturer: Nuvoton Technology Corporation of America
• Series: NuMicro M051™r

Specifications of M0516ZAN

• Core Processor: ARM Cortex-M0
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: EBI/EMI, I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 2.5 V ~ 5.5 V
• Data Converters: A/D 5x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 33-WFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

6.6.4.2 PWM Double Buffering, Auto-reload and One-shot Operation
NuMicro M051
the start of next period without affecting current timer operation. The PWM counter value can be
written into CNRx and current PWM counter value can be read from PDRx.
The bit CH0MOD in PWM Control Register (PCR) defines PWM0 operates in auto-reload or one-
shot mode If CH0MOD is set to one, the auto-reload operation loads CNR0 to PWM counter when
PWM counter reaches zero. If CNR0 are set to zero, PWM counter will be halt when PWM
counter counts to zero. If CH0MOD is set as zero, counter will be stopped immediately.
PWM1~PWM7 performs the same function as PWM0.
write a nonzero number to
prescaler & setup clock
dividor
Waveform
down-counter
PWM-Timer
PWM
Comparator
output
(CMR)
PWM
(Write initial setting)
NuMicro M051
Auto reload = 1
(CHxMOD=1)
CNR=150
CMR=50
CMR = 1
CNR = 3
™
(PWM-Timer starts running)
Write
series PWM Timers have double buffering function the reload value is updated at
3
1
Set ChxEN=1
Figure 6.6-11 PWM Double Buffering Illustration
Start
Figure 6.6-10 PWM-Timer Operation Timing
3
CNR=199
CMR=49
Write
151
™
2
(S/W write new value)
Series Technical Reference Manual
1
1
51
CMR = 0
CNR = 4
- 194 -
(PWMIFx is set by H/W)
0
(H/W update value)
Auto-load
CNR=99
CMR=0
4
Write
Publication Release Date: Sep 14, 2010
200
3
2
0
50
CMR=XX
1
CNR=0
Write
(PWMIFx is set by H/W)
0
100
Auto-load
Revision V1.2
1
Stop
4