32186 datasheet(910/1032 Pages) RENESAS

910 / 1032 page

POWER SUPPLY CIRCUIT

22-2

32185/32186 Group Hardware Manual

Rev.1.10 REJ09B0235-0110 May 15, 07

22.1 Configuration of Power Supply Circuit

The 32185/32186 operates with a single 5 V ± 0.5 V or 3.3 V ± 0.3 V power supply.

Unless otherwise noted, 5 V ± 0.5 V and 3.3 V ± 0.3 V in this chapter are referred to simply by 5 V and 3.3 V,

respectively.

Table 22.1.1 Power Supply Functions

Power Supply Type

Pin Name

Function

5.0V or 3.3V

VCCE

Main power supply

AVCC0

Power supply for the A/D converter

VREF0

Reference voltage for the A/D converter

VDDE

Power supply for the internal RAM backup

VCC-BUS

Power supply for the external bus

EXCVCC

External capacitor connection pin

EXCVDD

External capacitor connection pin

VCCER

Power supply for the internal voltage generator circuit

Figure 22.1.1 Configuration of the Power Supply Circuit (VCCE = 5.0 V or 3.3 V)

22.1 Configuration of Power Supply Circuit

I/O Control Circuit

CPU

Peripheral Circuit

Internal Flash

Memory

A/D Converter

Circuit

Internal RAM

Internal Voltage Generator Circuit

Main VDC

Backup Voltage

Generator Circuit

Sub-VDC

Oscillator Circuit

External Bus

PLL

EXCVCC

EXCVDD

VDDE

VCCE

AVCC0

VCC-BUS

control

signal

VCCER

(65pin)

(Note 1)

Note 1: Do not apply power voltage to the EXCVDD and EXCVCC pins. And External Capacitance

for Power Supplyis refer to Chapter 23 ELECTRICAL CHARACTERISTICS.

32186 Datasheet(PDF) 910 Page - Renesas Technology Corp

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