參數(shù)資料
型號(hào)： M37735S4LHP
元件分類： 微控制器/微處理器
英文描述： 16-BIT, MICROCONTROLLER, PQFP80
封裝： FINE PITCH, PLASTIC, QFP-80
文件頁數(shù)： 30/63頁
文件大小： 8367K
代理商： M37735S4LHP
OVERVIEW
1-10
7733 Group User’s Manual
1.3 Pin description
(3) In microprocessor mode
Table 1.3.6 Examples of handling unused pins in microprocessor mode
Handling example
Connect these pins to pin Vcc or Vss via resistors after these
pins are set to the input mode, or leave these pins open after
they are set to the output mode (Notes 1 and 2).
Leave this pin open. (Note 5)
Leave this pin open.
Connect these pins to pin Vcc via resistors after these pins are
set to the input mode. (These pins are pulled high.) (Note 2)
Connect this pin to pin Vcc.
Connect these pins to pin Vss.
Notes 1: When leaving these pins open after they are set to the output mode, note the following: these pins
function as input ports from reset until they are switched to the output mode by software. Therefore,
voltage levels of these pins are undefined and the power source current may increase while these
pins function as input ports.
Software reliability can be enhanced when the contents of the above ports’ direction registers are
set periodically. This is because these contents may be changed by noise, a program runaway
which occurs owing to noise, etc.
2: For unused pins, use the shortest possible wiring (within 20 mm from the microcomputer’s pins).
3: This is applied when “H” level is input to pin BYTE.
4: This is applied when “H” level is input to pin BYTE and the accessible area has a capacity of 64
Kbytes.
5: When Vss level is applied to pin CNVss, note the following: this pin functions as an input port from
reset until the processor mode is switched to the microprocessor mode by software. Therefore, a
voltage level of this pin is undefined and the power source current may increase while this pin
functions as an input port.
6: This is applied when an external clock is input to pin XIN.
Pins
P43–P47, P5–P8
____
BHE
(Note 3)
ALE
(Note 4)
_____
HLDA
,
φ1
XOUT (Note 6)
_____
____
HOLD
, RDY
AVcc
AVss, VREF
P43–P47, P5–P8
AVss
VREF
HOLD
RDY
Left open
M37733MHBXXXFP
HLDA
Vcc
Vss
AVcc
XOUT
When setting ports to input mode
Left open
P43–P47, P5–P8
AVss
VREF
Left open
Vss
AVcc
XOUT
When setting ports to output mode
Left open
Vcc
M37733MHBXXXFP
BHE
ALE
HOLD
RDY
BHE
ALE
HLDA
f1
Fig. 1.3.3 Examples of handling unused pins in microprocessor mode
相關(guān)PDF資料
PDF描述
M37735EHLHP 16-BIT, OTPROM, MICROCONTROLLER, PQFP80
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M37735T-PAC 制造商:Renesas Electronics Corporation 功能描述:DEV 7733 SIMPLE DEVELOPMENT TOOL PACKAGE - Bulk
M37736EHB 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:PROM VERSION OF M37736EHBXXXGP
M37736EHBGS 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:PROM VERSION OF M37736MHBXXXGP
M37736EHBXXXGP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:PROM VERSION OF M37736MHBXXXGP(MICROCOMPUTERS)
M37736EHL 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:PROM VERSION OF M37736MHLXXXHP(MICROCOMPUTERS)
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