Samsung YP-P10 User Manual download pdf (Page 54)

100

101

S3C2440A RISC MICROPROCESSOR PRODUCT OVERVIEW

1-25

Table 1-3. S3C2440A Signal Descriptions (Sheet 6 of 6) (Continued)

Signal Input/Output Description

Power

VDDalive P S3C2440A reset block and port status register V

It should be always supplied whether in normal mode or in Sleep mode.

VDDiarm P S3C2440A core logic V

for ARM core.

VDDi P S3C2440A core logic V

for Internal block.

VSSi/VSSiarm P S3C2440A core logic V

VDDi_MPLL P S3C2440A MPLL analog and digital V

VSSi_MPLL P S3C2440A MPLL analog and digital V

VDDOP P S3C2440A I/O port VDD (3.3V)

VDDMOP P S3C2440A memory I/O V

3.3V: SCLK up to 135 MHz

2.5V: SCLK up to 135 MHz

1.8V: SCLK up to 93 MHz

VSSOP P S3C2440A I/O port VSS

RTCVDD P RTC V

(3.0V, Input range: 1.8 ~ 3.6V)

This pin must be connected to power properly if RTC isn't used.

VDDi_UPLL P S3C2440A UPLL analog and digital V

VSSi_UPLL P S3C2440A UPLL analog and digital V

VDDA_ADC P S3C2440A ADC V

(3.3V)

VSSA_ADC P S3C2440A ADC V

NOTES:

1. I/O means Input/Output.

2. AI/AO means analog input/analog output.

3. ST means schmitt-trigger.

4. P means power.

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