Z8018006PEC Zilog, Z8018006PEC Datasheet - Page 72

• Manufacturer Part Number: Z8018006PEC
• Description: IC 6MHZ Z180 CMOS ENH MPU 64-DIP
• Manufacturer: Zilog

Specifications of Z8018006PEC

• Processor Type: Z180
• Features: 8-Bit, Enhanced Z80 Megacell
• Speed: 6MHz
• Voltage: 5V
• Mounting Type: Through Hole
• Package / Case: 64-DIP (0.750", 19.05mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 269-3005

Interrupt Vector Low Register
Interrupt Vector Low Register (IL: I/O Address = 33h)
PS014004-1106
Bit
second machine cycle of the two cycles involved in transferring a byte. With zero-wait state
I/O cycles, which apply only to the ASCIs, it is impossible for a device to update its
REQUEST
With one-wait-state I/O cycles (the fastest possible except for the ASCIs), it is unlikely that
an output device is able to update its
to the ESCC and bidirectional Centronics controller, and is recommended for external output
devices connected to
With two or more wait states in I/O cycles, external output devices on
edge or level sense depending on their characteristics; edge sense is still recommended for
output on the ESCC and bidirectional Centronics controller.
DIM1, DIM0: DMA Channel 1 I/O and Memory Mode (bits 1-0)—Specifies the
source/destination and address modifier for channel 1 memory to/from I/O transfer modes.
DIM1
Table 18. Channel 1 Transfer Mode
Mnemonic: IL
Address 33
Bits
INT1
to
DIM1 DMI0 Transfer Mode Address Increment/Decrement
0
0
1
1
R/W
IL 7
0
7
Programmable
Figure 68. Interrupt Vector Low Register (IL: I/O Address = 33h)
during
7–5
and
and
0
1
0
1
of
R/W
IL 6
INT2
6
DIM0
signal in time, and edge sensing must be used.
IL
RESET
are used as bits
Memory→I/O
Memory→I/O
I/O→Memory
I/O→Memory
pins and for the DMAs, ASCIs,
R/W
are cleared to
IL 5
5
(Figure
T
OUT
––
4
Interrupt Source Dependent Code
/
68).
DREQ
7–5
0
––
3
during
MAR1 +1, IAR1 fixed
MAR1–1, IAR1 fixed
IAR1 fixed, MAR1 + 1
IAR1 fixed, MAR1 –1
.
of the synthesized interrupt vector during interrupts for the
REQUEST
––
RESET
2
.
––
in time, and edge sense is required for output
1
PRTs
, and
––
0
CSIO
. These three bits are cleared
Microprocessor Unit
T
OUT
/
DREQ
Architecture
can use
Z80180
66