Z8523008PSG Zilog, Z8523008PSG Datasheet - Page 77
Z8523008PSG
Manufacturer Part Number
Z8523008PSG
Description
IC 8MHZ ESCC 40-DIP
Manufacturer
Zilog
Datasheet
1.Z8523008PSG.pdf
(117 pages)
Specifications of Z8523008PSG
Controller Type
Serial Communications Controller (SCC)
Interface
Bus
Voltage - Supply
4.5 V ~ 5.5 V
Current - Supply
4mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
40-DIP (0.620", 15.75mm)
Operating Supply Voltage
5 V
Supply Current (max)
9 mA
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Mounting Style
Through Hole
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
269-3917
Z8523008PSG
Z8523008PSG
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Z8523008PSG
Manufacturer:
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Z85230 Timing
PS005303-0907
tor on A7-A0. WR9 bit 1 is set to 1 to disable the placing of a vector on a bus. The INT pin
also goes inactive in response to the falling edge of DS. There is only one DS per interrupt
acknowledge cycle.
IP bits in the Z80230 are updated by AS, which can delay interrupt requests if the proces-
sor does not supply AS strobes during the time in between accesses of the Z80230.
The ESCC generates internal control signals from WR and RD that relate to PCLK.
Because PCLK had no defined phase relationship with WR and RD, the circuitry generat-
ing the internal control signals provides time for metastable conditions to disappear. This
causes a recovery time related to PCLK. The recovery time applies only to bus transac-
tions involving the ESCC. The recovery time required for proper operation is specified
INTACK
A7–A0
CS0
IEO
INT
DS
AS
IEI
Figure 19. Z80230 Interrupt Acknowledge Cycle Timing
Product Specification
Vector
Z80230 Interface Timing
Z85230/Z80230
72
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