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參數(shù)資料
| 型號： | M38C59GFHP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, OTPROM, 6.25 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | 12 X 12 MM, 0.50 MM PITCH, PLASTIC, LQFP-80 |
| 文件頁數(shù)： | 14/71頁 |
| 文件大小： | 939K |
| 代理商： | M38C59GFHP |
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Rev.2.00
Nov 23, 2005
page 21 of 75
REJ03B0098-0200
38C5 Group (One Time PROM version)
Termination of unused pins
Termination of common pins
I/O ports:
Select an input port or an output port and follow each
processing method.
Output ports: Open.
Input ports:
If the input level become unstable, through current flow
to an input circuit, and the power supply current may
increase.
Especially, when expecting low consumption current
Table 7 Termination of unused pins
Pin
P00/SEG8–P07/SEG15
P10/SEG16–P17/SEG23
P20/SEG0–P27/SEG7
P30/SEG24–P37/SEG31
P40/RxD
P41/TxD
P42/SCLK1
P43/SRDY1
P44/SIN2
P45/SOUT2
P46/SCLK2
P47/SRDY2
P50/AN0/RTP0
P51/AN1/RTP1
P52/AN2–P56/AN6
P57/AN7/ADKEY
P60/XCIN
P61/XCOUT
P62/INT00
P63/TXOUT2
P64/INT2
P65/TXOUT1
P66/INT10/CNTR0
P67/CNTR1
P70/C1/INT01
P71/C2/INT11
P72/T2OUT/CKOUT
P73/PWM0/T3OUT
P74/PWM1/T4OUT
VL3
VL2
VL1
COM0–COM3
COM4/SEG35–COM7/SEG32
VREF
Termination 2
When selecting SEG output, open.
When selecting RxD function, perform
termination of input port.
When selecting TxD function, perform
termination of input port.
When selecting external clock input,
perform termination of output port.
When selecting SRDY1 function,
perform termination of output port.
When selecting SIN2 function, perform
termination of input port.
When selecting SOUT2 function,
perform termination of output port.
When selecting external clock input,
perform termination of output port.
When selecting SRDY2 function,
perform termination of output port.
When selecting AN function, these
pins can be opened. (A/D conversion
result cannot be guaranteed.)
Do not select XCIN-XCOUT oscillation
function by program.
When selecting INT function, perform
termination of input port.
When selecting TXOUT function,
perform termination of output port.
When selecting INT function, perform
termination of input port.
When selecting TXOUT function,
perform termination of output port.
When selecting CNTR input function
or INT function, perform termination of
input port.
When selecting CNTR input function,
perform termination of input port.
When selecting INT function, perform
termination of input port.
When selecting T2OUT function or CKOUT
function, perform termination of output port.
When selecting PWM, T3OUT, or T4OUT
function, perform termination of output port.
–
Termination 3
When selecting internal clock output,
perform termination of output port.
When selecting internal clock output,
perform termination of output port.
When selecting RTP function,
perform termination of output port.
–
When selecting ADKEY function,
pull-up this pin through a resistor.
(at STP or WIT instruction execution etc.), pull-up or
pull-down input ports to prevent through current (built-
in resistor can be used).
We recommend processing unused pins through a re-
sistor which can secure IOH(avg) or IOL(avg).
Because, when an I/O port or a pin which have an out-
put function is selected as an input port, it may operate
as an output port by incorrect operation etc.
Termination 1 (recommend)
I/O port
Do not select the C pin (voltage
multiplir).
–
Input port
I/O port
Connect to Vcc
VL3
≥ VL2 ≥ VL1
Connect to Vss
Open
Connect to Vcc
–
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