Silan

Semiconductors

SC3010

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 2.1

2002-02-28

7

7.OSCILLATOR

The OSC is a 1-pin oscillator input/output terminal. The oscillator is constructed by connecting in series a ceramic

resonator like TOKO CRK429.

8. TEST MODE

When T1,T2 and OSC Pins are in HIGH State, the circuit initializes. All internal nodes except for the LATCH are

defined. The latch is defined when a scan cycle starts by pulling down a KI or a C Input while the oscillator is active.

If the debounce cycle has been completed, then the scan cycle can be accomplished 3x2

3

times faster by setting

the T1 to HIGH. If the scan cycle has been completed, the Latch contents can be read 3x2

7

times faster by setting

theT2toHIGH.