CF5705CF 查看數據表（PDF） - Nippon Precision Circuits
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CF5705CF Datasheet PDF : 7 Pages
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CF5705 series
Test Function
TEST
OUT1
OUT2
T < Tch
T > Tch
TCY/2
TCY/2 tCY/2 tCY/2
TPW
TPW
TPW
VDD
VSS
VDD
VSS
VDD
VSS
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 MΩ and less than 20 pF. The motor
drive outputs on OUT1 and OUT2 continue to oper-
ate normally.
Test mode 1 (TEST = VDD)
Test mode 1 is invoked when TEST is held HIGH for
a minimum of 2 cycles of the 512 Hz clock
(TCH > 3.9 ms), otherwise it is ignored. In test mode
1, high-speed motor output operation occurs, with
the cycle time set by mask option to 62.5 or 125 ms.
Test mode 2 (TEST = VSS)
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.
NIPPON PRECISION CIRCUITS—6
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