Z8523316ASG Zilog, Z8523316ASG Datasheet - Page 2

• Manufacturer Part Number: Z8523316ASG
• Description: IC EMSCC/2 CMOS 16MHZ 44LQFP
• Manufacturer: Zilog
• Series: EMSCC™r

Specifications of Z8523316ASG

• Controller Type: Serial Communications Controller (SCC)
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 5mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 44-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Interface: -
• Other names: 269-4698; Z8523316ASG

automatically: transmit a flag before the data, reset
the Tx Underrun/EOM latch, force the TxD pin
high at the appropriate time when using NRZI
encoding, deassert the /RTS pin after the closing
flag, and better handle ABORTed frames when
using the 10x19 status FIFO. The combination of
these features along with the deeper data FIFOs
significantly simplifies SDLC driver software.
The CPU hardware interface has been simplified
by relieving the databus setup time requirement
and supporting the software generation of the inter-
rupt acknowledge signal (/INTACK). These
changes allow an interface with less external logic
to many microprocessor families while maintain-
ing compatibility with existing designs. I/O han-
dling of the EMSCC is improved over the SCC
with faster response of the /INT and /DTR//REQ
pins.
PB005802-0608
Databus
Control
Interrupt
Control
Bus Interface
CPU & DMA
Z85233 EMSCC™ Enhanced Mono Serial Communication Controller
/INTACK
/INT
Figure 1. Z85233 Functional Block Diagram
IEO
IEI
Interrupt
Internal
Control
Control
Logic
Logic
The many enhancements added to the EMSCC per-
mits a system design that increases overall system
performance with better data handling and less
interface logic.
Power connections follow conventional descrip-
tions below:
Connection
Power
Ground
Channel A
Channel B
Register
Register
Note:
All Signals with a preceding front
slash, "/", are active Low, e.g.: B//W
(WORD is active Low); /B/W (BYTE
is active Low, only).
Circuit
V
GND
C hannel A
C hannel B
CC
Device
V
V
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