參數(shù)資料
型號(hào): UPD78F9511GR-JJG-A
廠商: Renesas Electronics America
文件頁數(shù): 60/175頁
文件大小: 0K
描述: MCU 8BIT SGL CHIP 16PIN
標(biāo)準(zhǔn)包裝: 400
系列: 78K0S/Kx1+
核心處理器: 78K0S
芯體尺寸: 8-位
速度: 10MHz
外圍設(shè)備: LVD,POR,PWM,WDT
輸入/輸出數(shù): 13
程序存儲(chǔ)器容量: 2KB(2K x 8)
程序存儲(chǔ)器類型: 閃存
RAM 容量: 128 x 8
電壓 - 電源 (Vcc/Vdd): 2 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 16-SSOP(0.173",4.40mm 寬)
包裝: 托盤
CHAPTER 8 WATCHDOG TIMER
User’s Manual U16994EJ6V0UD
150
Cautions 2. After reset is released, WDTM can be written only once by an 8-bit memory
manipulation instruction.
If writing is attempted a second time, an internal reset
signal is generated. However, at the first write, if “1” and “x” are set for WDCS4 and
WDCS3 respectively and the watchdog timer is stopped, then the internal reset
signal does not occur even if the following are executed.
Second write to WDTM
1-bit memory manipulation instruction to WDTE
Writing of a value other than “ACH” to WDTE
3. WDTM cannot be set by a 1-bit memory manipulation instruction.
4. When using the flash memory programming by self programming, set the overflow
time for the watchdog timer so that enough overflow time is secured (Example 1-
byte writing: 200
μs MIN., 1-block deletion: 10 ms MIN.).
Remarks 1. fRL: Low-speed internal oscillation clock oscillation frequency
2. fX: System clock oscillation frequency
3.
×: Don’t care
4. Figures in parentheses apply to operation at fRL = 480 kHz (MAX.), fX = 10 MHz.
(2) Watchdog timer enable register (WDTE)
Writing ACH to WDTE clears the watchdog timer counter and starts counting again.
This register can be set by an 8-bit memory manipulation instruction.
Reset signal generation sets this register to 9AH.
Figure 8-3. Format of Watchdog Timer Enable Register (WDTE)
0
1
2
3
4
5
6
7
Symbol
WDTE
Address: FF49H
After reset: 9AH
R/W
Cautions 1. If a value other than ACH is written to WDTE, an internal reset signal is generated.
2. If a 1-bit memory manipulation instruction is executed for WDTE, an internal reset
signal is generated.
3. The value read from WDTE is 9AH (this differs from the written value (ACH)).
相關(guān)PDF資料
PDF描述
MC74HC4852ANG IC MUX/DEMUX DUAL 4X1 16DIP
MC74HC4851ANG IC MUX/DEMUX 8X1 16DIP
NLAS5123MNR2G IC SWITCH SPDT 6WDFN
PI3V312QE IC VIDEO MUX/DEMUX 2X1 16QSOP
ISL54409IRUZ-T IC SW USB/AUDIO DUAL SPT 10UTQFN
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UPD78F9512GR-JJG-A 功能描述:MCU 8BIT SGL CHIP 16PIN RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:78K0S/Kx1+ 標(biāo)準(zhǔn)包裝:38 系列:Encore!® XP® 核心處理器:eZ8 芯體尺寸:8-位 速度:5MHz 連通性:IrDA,UART/USART 外圍設(shè)備:欠壓檢測(cè)/復(fù)位,LED,POR,PWM,WDT 輸入/輸出數(shù):16 程序存儲(chǔ)器容量:4KB(4K x 8) 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 105°C 封裝/外殼:20-SOIC(0.295",7.50mm 寬) 包裝:管件 其它名稱:269-4116Z8F0413SH005EG-ND
UPD78F9801GB-8ES-A 制造商:Renesas Electronics Corporation 功能描述:
UPD78F9842GB-8ES 制造商:Renesas Electronics Corporation 功能描述:
UPD78F9842GB-8ES-A 制造商:Renesas Electronics Corporation 功能描述:
UPD78F9850AMC(A)-5A4-A 制造商:Renesas Electronics Corporation 功能描述: