CF5705 series
Test Function
T < T
ch
TEST
V
SS
T > T
ch
V
DD
T
CY
/2
OUT1
T
CY
/2
t
CY
/2
t
CY
/2
V
DD
T
PW
V
SS
V
DD
OUT2
T
PW
T
PW
V
SS
Normal mode (TEST = open circuit)
In test mode, a 512 Hz rectangular wave is output on
TEST. Note that the output load (probe) must be
greater than 10 M
Ω
and less than 20 pF. The motor
Test mode 1 (TEST = V
DD
)
Test mode 1 is invoked when TEST is held HIGH for
a minimum of 2 cycles of the 512 Hz clock
(T
CH
> 3.9 ms), otherwise it is ignored. In test mode
Test mode 2 (TEST = V
SS
)
Test mode 2 is a dedicated IC test mode. In test mode
2, the device operates at 32-times speed, with the
supply voltage connected directly to the oscillator
circuit. Note that if a reset input occurs, the internal
operation is reset and device output stops. Once
operation stops, normal operation is not restored
until TEST is either open circuit or goes LOW.
1, high-speed motor output operation occurs, with
the cycle time set by mask option to 62.5 or 125 ms.
drive outputs on OUT1 and OUT2 continue to oper-
ate normally.
NIPPON PRECISION CIRCUITS—6
NPC [ NIPPON PRECISION CIRCUITS INC ]
