Z8L180 ZILOG [Zilog, Inc.], Z8L180 Datasheet - Page 99
Z8L180
Manufacturer Part Number
Z8L180
Description
Z8018x Family MPU
Manufacturer
ZILOG [Zilog, Inc.]
Datasheet
1.Z8L180.pdf
(326 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
Z8L18020FSG
Manufacturer:
IR
Quantity:
101
Company:
Part Number:
Z8L18020VSC
Manufacturer:
NXP
Quantity:
1 302
- Current page: 99 of 326
- Download datasheet (2Mb)
84
UM005001-ZMP0400
Z 8018x Fam il y
M PU Us e r M anual
Note: RETI machine cycles 9 and 10 not shown.
A0
M1 (M1E = 1)
M1 (M1E = 0)
–
A18 (A19)
Return from Subroutine (RETI) Instruction Sequence
When the
the RETI instruction sequence. The Z8X180 then refetches the RETI
instruction with four T-states in the
peripherals time to decode that cycle (See Figure 42). This procedure
allows the internal interrupt structure of the peripheral to properly decode
the instruction and behave accordingly.
The M1E bit of the Operation Mode Control Register (OMCR) must be
set to
instruction sequence. This condition is the desired operation when Z80
peripherals are connected to the Z8018X.
Figure 42.
The RETI instruction takes 22 T-states and 10 machine cycles. Table 10
lists the conditions of all the control signals during this sequence for the
D0
MREQ
–
Phi
RD
D7
ST
0
so that M1 signal is active only during the refetch of the RETI
EDH
T1
RETI Instruction Sequence
T2
/
4DH
PC
EDH
T3 T1
sequence is fetched by the Z8X180, it is recognized as
T2
4DH
T3
PC + 1
Ti
EDH
Ti
Ti
cycle allowing the Z80
T1
T2
EDH
PC
T3 Ti
T1
T2
PC + 1
4DH
T3
T1
Related parts for Z8L180
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Communication Controllers, ZILOG INTELLIGENT PERIPHERAL CONTROLLER (ZIP)
Manufacturer:
Zilog, Inc.
Datasheet:
Part Number:
Description:
CMOS Z8 microcontroller. ROM 16 Kbytes, RAM 256 bytes, speed 16 MHz, 32 lines I/O, 3.0V to 5.5V
Manufacturer:
Zilog, Inc.
Datasheet:
Part Number:
Description:
Low-cost microcontroller. 512 bytes ROM, 61 bytes RAM, 8 MHz
Manufacturer:
Zilog, Inc.
Datasheet:
Part Number:
Description:
Z8 4K OTP Microcontroller
Manufacturer:
Zilog, Inc.
Datasheet:
Part Number:
Description:
CMOS SUPER8 ROMLESS MCU
Manufacturer:
Zilog, Inc.
Datasheet:
Part Number:
Description:
SL1866 CMOSZ8 OTP Microcontroller
Manufacturer:
Zilog, Inc.
Datasheet:
Part Number:
Description:
SL1866 CMOSZ8 OTP Microcontroller
Manufacturer:
Zilog, Inc.
Datasheet:
Part Number:
Description:
OTP (KB) = 1, RAM = 125, Speed = 12, I/O = 14, 8-bit Timers = 2, Comm Interfaces Other Features = Por, LV Protect, Voltage = 4.5-5.5V
Manufacturer:
Zilog, Inc.
Datasheet:
Part Number:
Description:
Manufacturer:
Zilog, Inc.
Datasheet:
Part Number:
Description:
Manufacturer:
Zilog, Inc.
Datasheet:
Part Number:
Description:
CMOS Z8 consumer controller processor. ROM 4 KB, RAM 237 bytes, speed 12 MHz, 24 lines I/O, 3.0V to 5.5V
Manufacturer:
Zilog, Inc.
Datasheet:
Part Number:
Description:
CMOS Z8 consumer controller processor. ROM 4 KB, RAM 236 bytes, speed 16 MHz, 32 lines I/O, 3.0V to 5.5V
Manufacturer:
Zilog, Inc.
Datasheet:
Part Number:
Description:
CMOS Z8 consumer controller processor. ROM 4 KB, RAM 236 bytes, speed 12 MHz, 32 lines I/O, 3.0V to 5.5V
Manufacturer:
Zilog, Inc.
Datasheet: