HD404816FS datasheet(95/100 Pages) RENESAS

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HD404818 Series

2. The oscillator stabilization time is the period from when V

CC reaches 2.7 V (HD407L4818:

CC =

3.0 V) at power-on until the oscillator stabilizes. The time required to stabilize the oscillator (t

RC)

must be obtained. Since t

RC depends on the ceramic oscillator’s circuit constant and stray

capacitance, consult with the ceramic oscillator manufacturer.

3. See figure 48.

4. See figure 49. The unit t

cyc is applied when the MCU is in standby mode or active mode.

5. See figure 50.

6. See figure 49. The unit t

subcyc is applied when the MCU is in watch mode or subactive mode.

subcyc = 244.14 µs (when a 32.768-kHz crystal oscillator is used)

7. The analog comparator stabilization time is the period from when D

12/D13 is placed in analog

input mode until the analog comparator stabilizes and correct data can be read.

8. Applies to HD40L4812, HD40L4814, HD40L4816, and HD40L4818.

9. Applies to HD407L4818.

Serial Interface Timing Characteristics

During Transmit Clock Output (HD40L4812, HD40L4814, HD40L4816, HD40L4818: V

CC = 2.7 to 6

V; HD407L4818: V

CC = 3 to 5.5 V; GND = 0 V, Ta = –20°C to +75°C, unless otherwise specified)

Item

Symbol

Pin(s)

Min

Typ

Max

Unit

Test Condition

Notes

Transmit clock cycle time

Scyc

SCK

cyc /

subcyc

1, 2, 4

Transmit clock high and low

widths

SCKH,

SCKL

SCK

0.5

Scyc

1, 2

Transmit clock rise and fall

times

SCKr,

SCKf

SCK

200

1, 2

Serial output data delay time t

DSO

500

1, 2

Serial input data setup time

SSI

300

Serial input data hold time

HSI

300

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