S3C821A View Datasheet(PDF) - Samsung

Part Name

Description

Manufacturer

S3C821A

S3C8-SERIES MICROCONTROLLES

Samsung 

S3C821A/P821A

ELECTRICAL DATA

Table 17-3. Data Retention Supply Voltage in Stop Mode

(TA = – 40 °C to + 85 °C)

Parameter

Symbol

Data retention supply

voltage

Data retention supply

current

VDDDR

IDDDR

Oscillator stabilization

wait time

tWAIT

Conditions

–

VDDDR = 1.0 V

Stop mode

Released by RESET

Released by interrupt

Min

Typ

Max

Unit

2.2

–

3.4

V

–

–

1

µA

–

216/fx (1)

–

ms

–

(2)

–

NOTES:

1. fx is the main oscillator frequency.

2. The duration of the oscillation stabilization time (tWAIT) when it is released by an interrupt is determined by

the setting in the basic timer control register, BTCON.

VDD

EXECUTION OF

STOP INSTRUCTION

STOP MODE

DATA RETENTION MODE

VDDDR

Interrupt Request

tWAIT

IDLE MODE

(Basic Timer active)

NORMAL

OPERATING

MODE

0.8 VDD

Figure 17-1. Stop Mode Release Timing When Initiated by an External Interrupt

17-5

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