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2 POWER SUPPLY
S1C33210 PRODUCT PART EPSON A-11
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,
102, 104
Power supply (-); GND
AVDD 30 Analog system power supply (+); AVDD = VDD
I/O
interface circuit
CPU core
Internal
peripheral
circuit
VDD
2.7 to 3.6 V
2.7 to 3.6 V
GND
I/O pins
Analog circuits
(A/D converter)
AVDD
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 V
DD and VSS pins. The following operating voltage can be used:
V
DD = 2.7 V to 3.6 V (VSS = GND)
Note: The S1C33210 has 6 V
DD 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.