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PDF UM8250 Data sheet ( Hoja de datos )
| Número de pieza | UM8250 | |
| Descripción | Asynchronous Communication Element | |
| Fabricantes | UMC | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de UM8250 (archivo pdf) en la parte inferior de esta página. Total 2 Páginas | ||
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SUMO
-============ UM82450/ UM8250
fl~ AsynchroEnleomusenCt o(AmCmEu)nication
Feature
• Adds or deletes standard asynchronous communication
bits (Start, Stop, and Parity) to or from serial data
stream
• Full double buffering eliminates need for precise
synchronization
• Independently controlled transmit, receive, line status,
and data set interrupts
(
• Programmable baud rate generator allows division of
any input clock by 1 to (2 16 - 1) and generates the
internal 16x clock
• Independent receiver clock input
• Modem control functions (CTS, RTS, DSR, DTR, RI,
and carrier detect)
• Single +5 volt power supply
General Description
UM82450 and UM8250 are programmable Asynchronous
Communication Element (ACE) chips fabricated with
Si -Gate NMOS process. The UM82450 is an improved
specification version of the UM8250. These two products
perform serial-to-parallel conversion on data characters
received from the CPU. The CPU can read the complete
• Fully programmable serial-interface characteristics
5-,6-,7-, or 8-Bit characters
- Even, Odd, or No-Parity bit generation and detection
...;.. 1-,1 %-, or 2-Stop bit generation
- Baud rate generation (DC to 56K baud)
• False start bit detection
• Complete status reporting capabilities
• Easily interfaces to most popular microprocessors
• Line break generation and detection
• Internal diagnostic capabilities
- Loopback controls for communications link fault
isolation
- Break, parity, overrun, framing error simulation
• Full prioritized interrupt system controls
status of the ACE at any time during the functional
operation. They also includes a programmable baud rate
generator that is capable of dividing the timing reference
clock input by divisors of 1 to (2 16 - 1), and producing
a 16x clock for driving the internal transmitter logic.
Pin Configuration
DO
01
02
03
04
05
06
07
RCLK
SIN
SOUT
CSO
CS1
CS2
BAUOOUT
XTAL1
XTAL2
OOSTR
DOSTR
VSS
VCC
AT
RLSO
OSR
CTS
MR
OUT1
OTR
RTS
OUT2
INTRPT
NC
AO
A1
A2
ADS
CSOUT
OOIS
DISTR
OISTR
7-188
1 page | ||
| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet UM8250.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| UM8250 | Asynchronous Communication Element | UMC |
| UM8250B | Asynchronous Communication Element |  UMC Corporation |
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| UM8253-5 | Programmable Interval Timer | UMC |
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