2 POWER SUPPLY

2 Power Supply

This chapter explains the operating voltage of the S1C33210.

2.1 Power Supply Pins

The S1C33210 has the power supply pins shown in Table 2.1.1.

 

 

 

Table 2.1.1 Power Supply Pins

 

Pin name

 

 

Pin No.

 

 

 

 

 

Function

 

 

QFP15-128

 

 

 

 

 

 

 

 

 

 

 

 

VDD

8, 27, 47, 74, 93, 111

 

Power supply (+)

 

 

 

 

 

 

 

 

VSS

3, 22, 39, 54, 67, 90,

 

Power supply (-); GND

 

 

 

102, 104

 

 

 

 

 

 

 

 

 

 

 

 

 

AVDD

 

30

 

Analog system power supply (+); AVDD = VDD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.7 to 3.6 V

 

VDD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Internal

 

 

 

 

 

 

 

 

 

 

 

 

 

CPU core

 

 

peripheral

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

circuit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I/O

 

 

 

 

I/O pins

 

 

 

 

 

 

 

 

interface circuit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.7 to 3.6 V

AVDD

Analog circuits (A/D converter)

GND

VSS

Figure 2.1.1 Power Supply System

2.2 Operating Voltage (VDD, VSS)

The core CPU, internal peripheral circuits, and external signal interfaces operate on the voltage difference between the VDD and VSS pins. The following operating voltage can be used:

VDD = 2.7 V to 3.6 V (VSS = GND)

Note: The S1C33210 has 6 VDD pins and 8 VSS pins. Be sure to supply the operating voltage to all the pins. Do not open any of them.

The operating clock frequency range (OSC3) is 5 MHz to 50 MHz with this voltage.

S1C33210 PRODUCT PART

EPSON

A-11