PMS150C datasheet(32/67 Pages) PADAUK

32 / 67 page

PMS150C

8 bit IO-Type Controller

Page 32 of 67

PDK-DS-PMS150C-EN-V004 – Jan. 24, 2018

Time

Counter

0xFF

bound

Time

Output-pin

Time out and

Interrupt request

Mode 0 – Period Mode

Event Trigger

Time

Counter

0xFF

bound

Time

Output-pin

Time out and

Interrupt request

Mode 1 – 8-bit PWM Mode

Time

Counter

0x3F

bound

Time

Output-pin

Time out and

Interrupt request

Mode 1 – 6-bit PWM Mode

Event Trigger

Time

Counter

0xFF

bound

Time

Output-pin

Time out and

Interrupt request

Mode 0 – Period Mode

Event Trigger

Time

Counter

0xFF

bound

Time

Output-pin

Time out and

Interrupt request

Mode 1 – 8-bit PWM Mode

Time

Counter

0x3F

bound

Time

Output-pin

Time out and

Interrupt request

Mode 1 – 6-bit PWM Mode

Event Trigger

Fig. 10: Timing diagram of Timer2 in period mode and PWM mode (tm2c.1=1)

5.7.1. Using the Timer2 to generate periodical waveform

If periodical mode is selected, the duty cycle of output is always 50%; its frequency can be summarized as

below:

Frequency of Output = Y ÷ [2 × (K+1) × S1 × (S2+1) ]

Where,

Y = tm2c[7:4] : frequency of selected clock source

K = tm2b[7:0] : bound register in decimal

S1 = tm2s[6:5] : pre-scalar (1, 4, 16, 64)

S2 = tm2s[4:0] : scalar register in decimal (1 ~ 31)

Example 1:

tm2c = 0b0001_1000, Y=8MHz

tm2b = 0b0111_1111, K=127

tm2s = 0b0_00_00000, S1=1, S2=0

 frequency of output = 8MHz ÷ [ 2 × (127+1) × 1 × (0+1) ] = 31.25kHz

Example 2:

tm2c = 0b0001_1000, Y=8MHz

tm2b = 0b0111_1111, K=127

tm2s[7:0] = 0b0_11_11111, S1=64 , S2 = 31

 frequency = 8MHz ÷ ( 2 × (127+1) × 64 × (31+1) ) =15.25Hz

Example 3:

tm2c = 0b0001_1000, Y=8MHz

tm2b = 0b0000_1111, K=15

tm2s = 0b0_00_00000, S1=1, S2=0

 frequency = 8MHz ÷ ( 2 × (15+1) × 1 × (0+1) ) = 250kHz

Example 4:

tm2c = 0b0001_1000, Y=8MHz

tm2b = 0b0000_0001, K=1

tm2s = 0b0_00_00000, S1=1, S2=0

 frequency = 8MHz ÷ ( 2 × (1+1) × 1 × (0+1) ) =2MHz

PMS150C Datasheet(PDF) 32 Page - PADAUK Technology.

PMS150C Datasheet(HTML) 32 Page - PADAUK Technology.

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67

Datasheet Download

Link URL