參數(shù)資料
型號(hào)： LC876748A
廠商： Sanyo Electric Co.,Ltd.
元件分類(lèi)： 8位微控制器
英文描述： 8-Bit Single Chip Microcontroller
中文描述： 8位單片機(jī)微控制器
文件頁(yè)數(shù)： 11/26頁(yè)
文件大?。?/td> 1099K
代理商： LC876748A
LC876764A/48A
11/26
Port Output Configuration
Output configuration and pull-up/pull-down resistor options are shown in the following table.
Input /output is possible even when port is set to output mode.
Option applies
to:
P00 to P07
1 bit units
Terminal
Options
Output Format
Pull-up resistor
Pull-down
resistor
-
1
CMOS
Programmable
(Note 1)
None
2
15 voltage Nch-open drain
-
1
CMOS
Programmable
-
P10 to P17
each bit
2
Nch-open drain
Programmable
-
1
CMOS
Programmable
-
P30 to P37
each bit
2
15V Nch-open drain
None
-
P70
-
None
Nch-open drain
Programmable
-
P71 to P73
-
None
CMOS
Programmable
-
P80 to P87
-
None
Nch-open drain
None
-
S0/T0 to
S15/T15
S16 to S51
XT1
-
None High voltage Pch-open drain
-
None
-
None
Input only
None
-
XT2
-
None
Output for 32.768kHz crystal
oscillation
None
-
Note 1 Programmable pull-up resisters of Port 0 can be attached in nibble units (P00-03, P04-07).
* Note 1: Connect as follows to reduce noise on VDD and increase the back-up time.
VSS1, and VSS2 must be connected together and grounded.
*Note 2 : The power supply for the internal memory is VDD1 but it uses the VDD2 as the power supply for
ports. When the VDD2 is not backed up, the port level does not become “H” even if the port latch is
in the “H” level. Therefore, when the VDD2 is not backed up and the port latch is “H” level, the port
level is unstable in the HOLD mode, and the back up time becomes shorter because the through
current runs from VDD to GND in the input buffer.
If VDD2 is not backed up, output “L” by the program or pull the port to “L” by the external circuit
in the HOLD mode so that the port level becomes “L” level and unnecessary current consumption is
prevented.
Back-up
capacitors
Power
Supply
LSI
VDD1
VDD2
VDD3
VSS2
VSS1
VDD4
VFD
Powers
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LC876748C 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:CMOS LSI 8 BIT 1 CHIP MICROCOMPUTER
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