- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376436 > UPD78323LP (NEC Corp.) 16/8-BIT SINGLE-CHIP MICROCONTROLLER PDF資料下載
參數(shù)資料
| 型號： | UPD78323LP |
| 廠商： | NEC Corp. |
| 英文描述： | 16/8-BIT SINGLE-CHIP MICROCONTROLLER |
| 中文描述： | 16/8-BIT單片機 |
| 文件頁數(shù)： | 48/86頁 |
| 文件大?。?/td> | 454K |
| 代理商： | UPD78323LP |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁當(dāng)前第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁
48
μ
PD78323, 78324
7.
OPERATION AFTER RESET
If the RESET input pin is set to the low level, the system reset is applied and each hardware becomes as initialized status
(reset status). If RESET input becomes high level, program execution is started. Initialize the contents of various registers
in the program as required.
Change the number of cycles for the programmable wait register and the fetch cycle control register in particular.
The RESET input pin is equipped with an analog delay noise suppressor to prevent malfunctioning due to noise.
Cautions 1. While RESET is active(low level), all pins remain high impedance (except WDTO, AV
REF
, AV
DD
, AV
SS
,
V
DD
, V
SS
, X1 and X2).
2. If RAM has been expanded externally, mount a pull-up resistor to the P90/RD and P91/WR pins. It is
possible that the P90/RD and P91/WR pins become high impedance resulting in an external RAM
contents corruption or input unit damage. In addition, signals may collide on the address/data bus,
resulting in the destruction of the input/output circuit.
Figure 7-1. Reset Signal Acknowledge
For reset operation upon power-up, secure the oscillation stabilizing time of about 40 msec from power-up to reset
acknowledge as shown in Figure 7-2.
Figure 7-2. Reset Upon Power-Up
RESET Input
Analog
Delay
Removed
as Noise
Analog
Delay
Reset
Acknowl-
edged
Analog
Delay
Reset
Release
Oscillation
Stabilizing
Time
Analog
Delay
Reset
Release
V
DD
RESET
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UPD78324 | 16/8-BIT SINGLE-CHIP MICROCONTROLLER |
| UPD784217AY | 16-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD784217AYGF | 16-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD784217AGC | 16-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD784217AGF | 16-BIT SINGLE-CHIP MICROCONTROLLERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPD78365AGF3B9 | 制造商: 功能描述: 制造商:undefined 功能描述: |
| UPD784031GC-8BT-A | 制造商:Renesas Electronics Corporation 功能描述:MCU 8BIT/16BIT 78K4 CISC ROMLESS 3.3V/5V 80PQFP - Trays 制造商:Renesas Electronics 功能描述:16 制造商:Renesas Electronics 功能描述:16 Cut Tape |
| UPD784031GK-9EU-A | 制造商:Renesas Electronics Corporation 功能描述:16BIT K4 ROMLESS - Bulk |
| UPD784031YGC-8BT | 制造商:Renesas Electronics Corporation 功能描述: |
| UPD784031YGC-8BT-A | 制造商:Renesas Electronics Corporation 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。