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ELANSC300-33KI Datasheet

  • ELANSC300-33KI

  • Highly Integrated, Low-Power, 32-Bit Microcontroller

  • 1344.13KB

  • 139页

  • AMD

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P R E L I M I N A R Y
CPU Local Bus Interface versus Internal LCD Interface
The tables of this section are brief descriptions of the alternate pin functions/names and the pin name of the Internal
LCD mode function that the alternate function replaces. The CPU Local Bus Interface alternate functions are con-
figured via the DTR and RTS pin states when the 脡lanSC300 microcontroller is reset.
Table 28.
CPU Local Bus
Interface Pin Name
A23鈥揂12
Pins Shared Between CPU Local Bus and Internal LCD Interface Functions
Pin Type
CPU Local Bus Interface
Pin Description/Notes
Local Bus Address Bus
Internal LCD
Controller Mode
Function Pin Name
DSMA14鈥揇SMA4
LVDD
DSMD7
DSMD6
DSMD5
DSMD4
DSMD3
DSMD2
DSMD1
DSMD0
DSOE
DSMA3
DSMA2
Pin No.
O
145
149鈥?55
158鈥?61
172
171
170
169
168
167
166
148
147
162
163
ADS
D/C
M/IO
W/R
BHE
BLE
LRDY
LDEV
CPURDY
CPUCLK
CPURST
O
O
O
O
O
O
I
I
O
O
O
Address Strobe
Data/Code Cycle Status signal
Memory/I/O Cycle Status signal
Write/Read Cycle Status signal
Byte High Enable
Byte Low Enable
Local Device Ready
Local Bus Device Acknowledge
CPU Ready
CPU Clock
CPU Reset
Notes:
1. The SA11鈥揝A0 pins are the lower order address lines for local bus cycles in the Local Bus Interface mode.
2. See the Table 26 on page 65 for information on required termination for Local Bus and Internal LCD Controller modes.
3. Other Internal LCD Controller mode pin functions, which are not listed in this table, change when the Local Bus mode is en-
tered. These pins change to an ISA bus function when Local Bus mode is entered.
脡lan鈩C300 Microcontroller Data Sheet
69

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