Z8L180 ZILOG [Zilog, Inc.], Z8L180 Datasheet - Page 104
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: 104 of 326
- Download datasheet (2Mb)
CYC1 CYC0
0
0
1
1
* Calculated interval
0
1
0
1
Table 11. DRAM Refresh Intervals
Refresh Control And RESET
After RESET, based on the initialized value of RCR, refresh cycles occur
with an interval of ten clock cycles and are three clock cycles in duration.
Dynamic Ram Refresh Operation Notes
1. Refresh Cycle insertion is stopped when the CPU is in the following
2. Refresh cycles are suppressed when the bus is released in response to
Insertion
Interval
10 states
20 states
40 states
80 states
states:
–
–
–
–
BUSREQ. However, the refresh timer continues to operate. Thus, the
time at which the first refresh cycle occurs after the Z8X180 re-
acquires the bus depends on the refresh timer and has no timing
relationship with the bus exchange.
During RESET
When the bus is released in response to BUSREQ
During SLEEP mode
During Wait States
10 MHz
(1.0 s)*
(2.0 s)*
(4.0 s)*
(8.0 s)*
8 MHz
(1.25 s)*
(2.5 s)*
(5.0 s)*
(10.0 s)*
Time Interval
6 MHz
1.66 s
3.3 s
6.8 s
13.3 s
M PU Us e r M anual
UM005001-ZMP0400
4 MHz
2.5 s
5.0 s
10.0 s
20.0 s
Z 8018x Fam il y
2.5 MHz
4.0 s
8.0 s
16.0 s
32.0 s
89
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: