7733 datasheet(32/940 Pages) RENESAS

32 / 940 page

OVERVIEW

7733 Group User’s Manual

1-5

1.3 Pin description

Tables 1.3.1–1.3.3 list the pin description. Note that the pin description of the built-in PROM version in the

EPROM mode is described in section “19.1 EPROM mode.”

Table 1.3.1 Pin description (1)

Input/Output

Input

Output

Input

Name

Power source input

CNVSS

Reset input

Clock input

Clock output

Enable output

External data bus width

selection input

Analog power source input

Reference voltage input

Note: In the low voltage version, it is 2.7 V to 5.5 V.

VCC, VSS

CNVSS

______

RESET

XIN

XOUT

BYTE

AVCC

AVSS

VREF

Functions

To pin VCC, apply 5 V

±10% (Note) (When the main

clock is the system clock) or 2.7 V to 5.5 V (When the

sub clock is the system clock). To pin VSS, apply 0 V.

This pin switches the processor mode.

[Single-chip Mode] [Memory Expansion Mode]

Connect to pin VSS.

[Microprocessor Mode]

Connect to pin VCC.

The microcomputer is reset when “L” level is input to

this pin.

Pins XIN and XOUT are the I/O pins of the clock

generating circuit, respectively. Connect these pins via

a ceramic resonator or a quartz-crystal oscillator. When

an external clock is used, the clock should be input to

pin XIN, and pin XOUT should be left open.

This pin outputs signal E. When E’s level is “L,” the

microcomputer reads data and instruction codes or

writes data. Also, output of signal E can be stopped

by software.

[Single-chip Mode]

Connect to pin VSS.

[Memory Expansion Mode] [Microprocessor Mode]

Input level to this pin determines whether the external

data bus has a 16-bit width or an 8-bit width. A 16-bit

width is selected when the level is “L,” and an 8-bit

width is selected when the level is “H.”

Power source input for the A-D converter. Connect to

pin VCC.

Power source input for the A-D converter. Connect to

pin VSS.

This is the reference voltage input pin for the A-D

converter.

1.3 Pin description

7733 Scheda tecnica(PDF) 32 Page - Renesas Technology Corp

7733 Scheda tecnica(HTML) 32 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Scheda tecnica Scarica

Link URL