MB9B360L datasheet(67/128 Pages) CYPRESS

67 / 128 page

Document Number: 002-04930 Rev.*B

Page 67 of 128

MB9B360L Series

12.4.2

Sub Clock Input Characteristics

(VBAT = 2.7V to 5.5V, VSS = 0V)

Parameter

Symbol

Name

Conditions

Value

Unit

Remarks

Min

Typ

Max

Input frequency

1/ tCYLL

X0A,

X1A

32.768

kHz

When crystal oscillator is

connected

100

kHz

When using external clock

Input clock cycle

tCYLL

31.25

μs

When using external clock

Input clock pulse width

PWH/tCYLL,

PWL/tCYLL

When using external clock

In the case of 48 pin Package, VBAT is VCC.

12.4.3

Built-in CR Oscillation Characteristics

Built-in High-Speed CR

(VCC = 2.7V to 5.5V, VSS = 0V)

Parameter

Symbol

Conditions

Value

Unit

Remarks

Min

Typ

Max

Clock frequency

fCRH

TJ = -20°C to +105°C

3.92

4.08

MHz

When trimming *

TJ = - 40°C to +125°C

3.88

4.12

TJ = - 40°C to +125°C

When not trimming

Frequency

stabilization time

tCRWT

μS

*1: In the case of using the values in CR trimming area of Flash memory at shipment for frequency/temperature trimming.

*2: This is the time to stabilize the frequency of high-speed CR clock after setting trimming value.

This period is able to use high-speed CR clock as source clock.

Built-in Low-Speed CR

(VCC = 2.7V to 5.5V, VSS = 0V)

Parameter

Symbol

Condition

Value

Unit

Remarks

Min

Typ

Max

Clock frequency

fCRL

100

150

kHz

0.8 × Vcc

tCYLL

0.8 × Vcc

0.2 × Vcc

0.8 × Vcc

PWL

PWH

X0A

VBAT

0.8 × VBAT

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