PCA9629PW,118 NXP Semiconductors, PCA9629PW,118 Datasheet - Page 25

• Manufacturer Part Number: PCA9629PW,118
• Description: Motor / Motion / Ignition Controllers & Drivers I2C-bus Stepper motor controller
• Manufacturer: NXP Semiconductors
• Type: Stepper Motor Controllerr

Specifications of PCA9629PW,118

• Rohs: yes
• Product: Stepper Motor Controllers / Drivers
• Operating Supply Voltage: 4.5 V to 5.5 V
• Supply Current: 6 mA
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-16
• Factory Pack Quantity: 2500

Fig 10. PCA9629 operation model for ramp-up (acceleration) and ramp-down (deceleration)
OUT0
OUT1
OUT2
OUT3
(1) The ramp start or ramp end speed is defined as the maximum value of the range given in
(2) The decrease/increase step pulse width is defined as the minimum value of the range given in
(3) The ramp-up final speed is defined as the minimum value of the range given in
Example shown is one-phase drive for clockwise rotation.
CWPWH/CCWPWH registers. For example, the ramp start or ramp end speed is 98.304 ms if the CWPWH/CCWPWH[15:13] = 010.
CWPWH/CCWPWH registers times the ramp step multiplication factor bits [3:0] in RMPCNTL register. For example, the decrease/increase step pulse width is
192 s (12 s  16) if the CWPWH/CCWPWH[15:13] = 010 (minimum value 12 s) and RMPCNTL[3:0] = 0100 (multiplication factor 16).
bits [12:0] plus 1 in CWPWH/L and CCWPWH/L registers. For example, the ramp-up final speed is 24 s (12 s  2) if the CWPWH/CCWPWH[15:13] = 010 (minimum
value 12 s) and the CWPWH/L or CCWPWH/L = 0x0001 (1 + 1).
98.304
ms
speed
ramp start speed
98.112
if MCNTL[7] = 1
ms
start motor
decrease step pulse width
97.92
ms
(1)
ramp-up operation
(acceleration rate)
97.728
ms
97.536
ramp-up
ms
(2)
24 μs
and CWRCOUNTx/CCWRCOUNTx registers
duration to keep rotation/step in final speed
defined by CWSCOUNTx/CCWSCOUNTx
(no microcontroller interactions required)
final (top) speed
final speed
Table 26
24 μs
(3)
and
Table 26
Table 28
Table 26
and
based on prescaler bit s [15:13] times the step pulse width value
Table 28
and
Table 28
based on prescaler bits [15:13] in
ramp-down
increase step pulse width
based on prescaler bit s [15:13] in
97.536
ms
(deceleration rate)
ramp-down operation
97.728
ms
operation is completed and
MCNTL[7] bit is self-clear
97.92
ramp end speed
ms
stop motor when
(2)
98.112
ms
(1)
time
98.304
ms
002aaf871