tb62212ftag TOSHIBA Semiconductor CORPORATION, tb62212ftag Datasheet - Page 12

• Manufacturer Part Number: tb62212ftag
• Description: Pwm Chopper Type Dual-stepping Motor Driver
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Input Signal Functions
Note 1: V
Note 2: High when the overheat detection circuit (TSD) or the over-current detection circuit (ISD) is in operation.
Note 3: Function of TSD and ISD
1. PHASE Input Pin Function
2. ENABLE Input Pin Function
PHASE
mode, motor can be rotated by changing the mode of this pin in phase A/B into sequential mode.
controlling this pin, motor can be halted in OFF mode or can be driven in 1-2 phase excitation mode.
H
H
H
H
H
L
This pin indicates the current polarity used in driving a stepping motor. When in 2-phase excitation drive
Select whether to activate the output of the respective phases when driving a stepping motor. By
Upon start-up and shutdown, this pin should be set to Low to avoid malfunction.
Input
Input
High when the operable range (3 V typical) or higher and Low when lower.
When one of V
When one of TSD or ISD is operating, the system shuts down or goes into stand-by mode (OR relationship).
Until the POR is released again after the TSD or the ISD is triggered, the detection circuit remains activated
and the IC is halted.
CCR
H
H
L
L
and V
ENABLE
Positive polarity (A: H, A : L)
Negative polarity (A: L, A : H)
Output of the corresponding channel: ON
Output of the corresponding channel: OFF
H
H
H
H
H
L
MR
CCR
or V
(Stepping motor mode)
M_MODE
STEP
STEP
STEP
STEP
Input
MR
⎯
⎯
is operating, the system is halted (OR relationship).
Function
Function
(Stepping motor mode)
(Stepping motor mode)
(Note 1)
Or V
V
CCR
H
H
H
H
H
L
MR
12
Operation of
TSD/ISD
(Note 2)
H
L
L
L
L
L
Output + : High, Output − : Low
Output − : High, Output + : Low
When ENABLE = L, output current of the
respective phase is turned off.
Normal operation
Standby mode
Standby mode when TSD/ISD triggered.
Remains until powered on again.
Action
TB62212FTAG
2010-10-05