UPD6708GS Просмотр технического описания (PDF) - NEC => Renesas Technology
Номер в каталоге
Компоненты Описание
Список матч
UPD6708GS Datasheet PDF : 72 Pages
| |||
µPD6708
1. PIN FUNCTIONS
1.1 List of Pin Functions
Pin No. Pin Name
1
SCK
2
SI
3
SO
4
IRQ
5
R/W
6
XI
7
XO
8
GND
9
BUS–
10
BUS+
11
AVDD
12
C/D
13
CS
14
RESET
15
TEST
16
VDD
Input/Output
Input
Input
Output
Output
Input
––
––
Input/output
––
Input
Input
Input
Input
––
Function
I/O Format At Reset
Input for serial clock used to interface with microcontroller. CMOS input Input
Input for serial data used to interface with microcontroller. CMOS input Input
Output for serial data used to interface with microcontroller. CMOS output High level
Output used by interrupt request signals generated by
communication and command execution results.
Used as operation start request signal to microcontroller.
The interrupt request signal is output for 8 µs or longer
at high level.
CMOS output Low level
Input for switching serial interface read/write mode.
When high, it is in the read mode. When low, it is in the
write mode.
When this pin is low and C/D pin high, the read and write
modes can be switched by commands input from the serial
interface.
CMOS input
Input
Connection pins for system clock resonator.
––
Use a 12- or 12.58-MHz crystal, or ceramic resonator.
Frequency precision depends on the communication mode
used.
Mode 0 : ±1.5 %
Mode 1 : ±1.5 %
Mode 2 : ±0.5 %
(Oscillation
continues)
Ground
––
––
Input/output for IEBus.
––
High
impedance
IEBus driver/receiver analog power supply. Connect to VDD. ––
––
Input used to switch between processing data input to the
serial interface as commands or data.
When set to high, data is processed as commands; when
low, data is processed as data.
When this pin is high and R/W pin low, the read and write
modes can be switched by commands input from the serial
interface.
CMOS input
Input
Chip select input.
When low, serial interface input is enabled.
When high, serial clock (SCK) input is disabled, SO pin
becomes high impedance, and the serial clock counter is
reset.
The status of CS pin is not affected by IEBus transmit and
receive operations.
CMOS input
Input
System reset signal input pin.
Low input effects a reset.
Always input the low signal for 6 µs or longer after turning
on the power.
CMOS input
Input
Always connect this pin to the VDD.
CMOS input ––
Positive power supply input. Apply a voltage of 5 V ±10 %. ––
––
5
Share Link: 