EZ80190AZ050EC Zilog, EZ80190AZ050EC Datasheet - Page 66
EZ80190AZ050EC
Manufacturer Part Number
EZ80190AZ050EC
Description
IC WEBSERVER 50MHZ XTEMP 100lQFP
Manufacturer
Zilog
Datasheet
1.EZ80190AZ050SG.pdf
(221 pages)
Specifications of EZ80190AZ050EC
Processor Type
eZ80
Features
High Speed, Single-Cycle Instruction-Fetch
Speed
50MHz
Voltage
3.3V
Mounting Type
Surface Mount
Package / Case
100-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
269-3123
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Manufacturer
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Price
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Table 18. Chip Select x Lower Bound Register (CS0_LBR = A8h, CS1_LBR = ABh, CS2_LBR
Chip Select x Upper Bound Register
Table 19. Chip Select x Upper Bound Register
Bit
Reset
CPU Access
Note: R/W = Read/Write.
Bit
Position
[7:0]
CS_LBR
Bit
CS0 Reset
CS1 Reset
CS2 Reset
CS3 Reset
CPU Access
Note: R/W = Read/Write.
For Memory Chip Selects, the Chip Select x Upper Bound register, listed in
defines the upper bound of the address range for which the corresponding Chip Select (if
enabled) can be active. For I/O Chip Selects, this register produces no effect. The reset
state for the Chip Select 0 Upper Bound register is
Chip Select upper bound registers is
Value Description
00h–
FFh
For Memory Chip Selects (CS_io = 0)
This bit specifies the lower bound of the Chip Select address
range. The upper byte of the address bus, ADDR[23:16], is
compared to the values contained in these registers for
determining if a Memory Chip Select signal should be generated.
For I/O Chip Selects (CS_io = 1)
This bit specifies the Chip Select address value. ADDR[11:4] is
compared to the values contained in these registers for
determining if an I/O Chip Select signal should be generated.
R/W
R/W
7
0
7
1
0
0
0
CS2_UBR = AFh, CS3_UBR = B2h)
R/W
R/W
6
0
6
1
0
0
0
= AEh, CS3_LBR = B1h)
R/W
R/W
5
0
5
1
0
0
0
00h
.
R/W
R/W
4
0
4
1
0
0
0
(CS0_UBR = A9h, CS1_UBR = ACh,
FFh
R/W
R/W
3
0
3
1
0
0
0
, while the reset state for the 3 other
R/W
R/W
2
0
2
1
0
0
0
Chip Selects and Wait States
Product Specification
R/W
R/W
1
0
1
1
0
0
0
R/W
R/W
Table
0
0
0
1
0
0
0
eZ80190
19,
56
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