S3C7238 查看數據表（PDF） - Samsung

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S3C7238

The S3C7238/C7235 single-chip CMOS microcontroller has been designed for high performance using Samsung's newest 4-bit CPU core, SAM47

Samsung 

ELECTRICAL DATA

S3C7238/P7238/C7235/P7235

Table 14-4. Subsystem Clock Oscillator Characteristics

(TA = – 40 °C + 85 °C, VDD = 1.8 V to 5.5 V)

Oscillator

Crystal

Oscillator

Clock

Configuration

XTIN XTOUT

Parameter

Oscillation frequency (1)

Test Condition

–

Min Typ Max Units

32 32.768 35 kHz

External

Clock

C1

C2

Stabilization time (2)

VDD = 4.5 V to 5.5 V –

VDD = 1.8 V to 4.5 V –

XTIN XTOUT XTIN input frequency (1)

–

32

1.0

2

s

–

10

–

100 kHz

XTIN input high and low

–

level width (tXTL, tXTH)

5

–

NOTES:

1. Oscillation frequency and XTIN input frequency data are for oscillator characteristics only.

2. Stabilization time is the interval required for oscillating stabilization after a power-on occurs.

15 µs

(TA = 25 °C, VDD = 0 V )

Table 14-5. Input/Output Capacitance

Parameter

Symbol

Condition

Min

Typ

Input

capacitance

CIN

f = 1 MHz; Unmeasured pins

–

–

are returned to VSS

Output

capacitance

COUT

–

–

I/O capacitance

CIO

–

–

Max

Units

15

pF

15

pF

15

pF

14-6

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