STV0681 Hardware Interfaces
STV0681
4.6
Quartz crystal
Regardless of the sensor type or anti-flicker requirements, the sensor + STV0681 chipset operates
from a single 12MHz fundamental quartz crystal. For specification requirements, see Table 13.
STV0681 includes an on-chip low jitter PLL. For PLL characteristics, see Table 12.
4.7
Numeric LCD interface
STV0681 supports a 2-digit LCD panel only, for alpha-numeric display.
4.7.1 LCD types
STV0681 connects to a non multiplexed, direct drive LCD with 2 x 7 segments. Many LCD types are
compatible with this interface. The LCD refresh frequency is 34.7Hz.
4.7.2 LCD interface pinout
The convention for segment numbering is as follows: '0' connects to segment 'a', '1' connects to
segment 'b', and so on, where a to g are standard for all 7-segment displays, as well as an LCD
common output, giving fifteen signals in total.
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ADCS 7283313C
STMICROELECTRONICS [ ST ]
