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EG80C188EB25 数据表(PDF) 41 Page - InnovASIC, Inc

部件名 EG80C188EB25
功能描述  8-Bit/16-Bit Microcontrollers
Download  85 Pages
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制造商  INNOVASIC [InnovASIC, Inc]
网页  http://www.innovasic.com
标志 INNOVASIC - InnovASIC, Inc

EG80C188EB25 数据表(HTML) 41 Page - InnovASIC, Inc

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IA186EB/IA188EB
Data Sheet
8-Bit/16-Bit Microcontrollers
July 10, 2011
IA211080314-13
http://www.Innovasic.com
UNCONTROLLED WHEN PRINTED OR COPIED
Customer Support:
Page 41 of 85
1-888-824-4184
Table 8. IA188EB Pin/Signal Descriptions (Continued)
Signal
Pin
Description
Name
PLCC
LQFP
PQFP
test_n
test_n
14
3
46
test. Input. Active Low. When the test_n input
is high (i.e., not asserted), it causes the
IA188EB to suspend operation during the
execution of the WAIT instruction. Operation
resumes when the pin is sampled low
(asserted).
txd0
txd0
52
39
2
Transmit (tx) data, Serial Port 0. Output. This
pin is the serial data output for Serial Port 0.
During synchronous serial communications,
txd0 becomes the transmit clock (rxd0
functions as an output for data transmission).
txd1
p2.1/txd1
58
45
8
Transmit (tx) data, Serial Port 1. Output. This
pin is the serial data output for Serial Port 1.
During synchronous serial communications,
txd1 becomes the transmit clock (rxd1
functions as an output for data transmission).
ucs_n
ucs_n
30
18
61
upper chip select. Output. Active Low. This
pin provides a chip select signal that will be
asserted (low) whenever the address of a
memory bus cycle is within the address space
programmed for that output.
vcc
vcc
1, 23,
42, 64
11, 29,
50, 71
13, 34,
54, 72
Power (vcc). This pin provides power for the
IA188EB device. It must be connected to a +5V
DC power source.
vss
vss
2, 22,
43, 63,
65, 84
10, 30,
49, 51,
70, 72
12, 14,
33, 35,
53, 73
Ground (vss). This pin provides the digital
ground (0V) for the IA188EB. It must be
connected to a vss board plane.
wr_n
wr_n
5
74
37
write. Output. Active Low. When asserted
(low), wr_n indicates that data available on the
data bus are to be latched into the accessed
memory or I/O device.


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