DS1050 Datasheet, PDF (11/17 Pages) Dallas Semiconductor – 5-Bit, Programmable, Pulse-Width Modulator: 1kHz, 5kHz, 10kHz, and 25kHz

DS1050 COMMANDS AND PROTOCOL Figure 4
SET PWM DUTY CYCLE
(a)
MSB
S
S_T
A
A_R
T
S
T
A
R
0
1
T
CONTROL
BYTE
LSB
A
0 1 A2 A1 A0 0 ^C
K
R/W=0
MSB
PWM
DATABYTE
LSB
0 0 0 PWM Data
DS1050
S
T
O
P
MSB
CONTROL
BYTE
LSB
MSB
PWM
DATABYTE
LSB
S
(b)
T
A
A _{0 1 0 1 A2 A1 A0 0 C}
R
T
K
0 0 1 Don't Care
S
T
O
P
R/W=0
CONTROL
PWM
BYTE
DATABYTE
MSB
LSB MSB
LSB
SET SHUT-DOWN MODE
(c)
S
T
A
S
T
0
1
0
1 A2 A1 A0 0
A
C
RA
K
1 1 0 Don't Care
S
T
O
P
TR
T
R/W=0
CONTROL
PWM
BYTE
DATABYTE
MSB
LSB MSB
LSB
RECALL MODE S
(d)
T
A
A 0 1 0 1 A2 A1 A0 0 _C
R
T
K
1 0 0 Don't Care
S
T
O
P
R/W=0
CONTROL
PWM
BYTE
DATABYTE
MSB
LSB MSB
LSB
READ PWM DUTY CYCLE S
T
(e)
A
R
T
A
0 1 0 1 A2 A1 A0 1 _C
K
0 0 0 PWM-DATA
S
T
O
P
R/W=1
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