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參數(shù)資料
| 型號(hào)： | UPD17072GB |
| 廠商： | NEC Corp. |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER WITH HARDWARE FOR DIGITAL TUNING SYSTEM |
| 中文描述： | 4位單芯片的數(shù)字調(diào)諧系統(tǒng)硬件單片機(jī) |
| 文件頁(yè)數(shù)： | 183/226頁(yè) |
| 文件大?。?/td> | 1250K |
| 代理商： | UPD17072GB |
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μ
PD17072,17073
183
Port 0B
Port 0C
Port 0D
Port 1A
Port 0A
Port 1B
Port 1C
Interrupt
CE reset
All pins are specified as general-purpose
input port pins.
At this time, all input ports except port 1A
(P1A3/AD1, P1A2/AD0, P1A1, P1A0) do
not increase current consumption by noise,
even if they are floated.
Port 1A (P1A3/AD1, P1A2/AD0, P1A1,
P1A0) is retained the status before clock
stop.
(1) When pull-down resistor ON is
selected by program:
Current consumption increases if these
pins externally pulled up.
(2) When pull-down resistor OFF is
selected by program:
These pins are floated and current
consumption by noise increases.
These ports are specified as general-
purpose output ports.
The output contents are retained as is.
Therefore, current consumption increases
if these ports are externally pulled down
while they output high level, or pulled up
while they output low level.
P0B3/SI/SO1
P0B2/SCK
P0B1
P0B0
P0C1
P0C0
P0D3/FMIFC/AMIFC
P0D2/AMIFC
P1A3/AD1
P1A2/AD0
P1A1
P1A0
P0A3
|
P0A0
P1B3
|
P1B0
P1C0/SO0
INT
CE
Table 19-2. Pin Status in Halt and Clock Stop Statuses and Notes (1/2)
Pin status and note on processing
Pin function
Pin symbol
Halt status
Clock stop status
Hold status immediately before halt status.
(1) When specified as output pins
Current consumption increases if any
of these pins is externally pulled down
while it outputs high level, or exter-
nally pulled up when it outputs low
level.
(2) When specified as input pins
(Except P1A3/AD1, P1A2/AD0, P1A1,
P1A0)
Current consumption by noise does
not increase if any of these pins is
floated.
(3) Port 1A (P1A3/AD1, P1A2/AD0,
P1A1, P1A0)
Current consumption increases if these
pins externally pulled up when they
selected pull-down resistors ON by
program.
When pull-down resistor OFF is
selected, these pins are floated and
current consumption by noise
increases.
(4) P0D3/FMIFC/AMIFC, P0D2/AMIFC
When P0D3/FMIFC/AMIFC, P0D2/
AMIFC pins are used for frequency
counter, current consumption in-
creases because internal amplifier
operates.
Initialize frequency counter by pro-
gram as necessary because it is not
automatically disabled even when CE
pin is low.
Current consumption increases by external noise if this pin is floated.
Current consumption increases by external noise if this pin is floated.
General-
purpose
I/O port
General-
purpose
input
port
General-
purpose
output
port
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