HD66702 Просмотр технического описания (PDF) - Hitachi -> Renesas Electronics

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HD66702

Dot-Matrix Liquid Crystal Display Controller/Driver

Hitachi -> Renesas Electronics 

HD66712U

tRES

RESET*

VIL1

VIL1

Note: When power is supplied, initializing by the internal reset circuit has priority. Accordingly,

the above RESET* input is ignored during internal reset period.

Figure 38 Reset Timing

VCC

2.7V/4.5V *2

0.2V

0.2V

0.2V

t rcc

0.1 ms ≤ t rcc ≤ 10 ms

t OFF *1

t OFF ≥1 ms

Notes: 1. tOFF compensates for the power oscillation period caused by momentary power

supply oscillations.

2. Specified at 4.5V for 5-volt operation, and at 2.7V for 3-volt operation.

3. If the above electrical conditions are not satisfied, the internal reset circuit will not

operate normally. In this case, initialized by instruction. (Refer to the Initializing by

Instruction section.)

Figure 39 Power Supply Sequence

451

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