- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384046 > UPD784916AGF (NEC Corp.) 16-BIT SINGLE-CHIP MICROCONTROLLERS PDF資料下載
參數(shù)資料
| 型號： | UPD784916AGF |
| 廠商： | NEC Corp. |
| 英文描述： | 16-BIT SINGLE-CHIP MICROCONTROLLERS |
| 中文描述： | 16位單晶片微控制器 |
| 文件頁數(shù)： | 47/86頁 |
| 文件大?。?/td> | 446K |
| 代理商： | UPD784916AGF |
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頁當(dāng)前第47頁第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
μ
PD784915A, 784916A
47
3.10 Watch Function
The
μ
PD784916A has a watch function that counts the overflow signals of the watch timer by hardware. As the
clock, the subsystem clock (32.768 kHz) is used.
Because this watch function is independent of the CPU, it can be used even while the CPU is in the standby mode
(STOP mode) or is reset. In addition, this function can be used at a low voltage of V
DD
= 2.7 V (MIN.).
Therefore, by using only the watch function with the CPU set in the standby mode or reset, a watch operation can
be performed at a low voltage and low current dissipation.
In addition, the watch function can also be used while the CPU is in the normal operation mode, because a dedicated
counter is provided.
The watch function can be used to count up to about 17 years of data.
The hardware watch counters (HW0 and HW1) are shared with external input counters. These counters execute
counting at the falling edge of input to the P65 pin, and can be used to count the H
SYNC
signals.
Figure 3-25. Block Diagram of Watch Counter
PM65
PMC65
P65
S
HW0
HW1
S
Watch timer
S
S
P65
Edge detection
Pin level read
WM.2
(enables/disables operation)
WM.2
WM.6
To NMI generation block
INTW
WM.7
WM.5
WM.4
BUZ signal
WM.1
Normal
Fast
forward
0
1
WM.2
(enables/disables operation)
0
f
XT
(32.768 kHz)
13
0
1
0
15
0
13
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UPD784915B | 16-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD784915BGF | 16-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD784916B | 16-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD784916BGF | 16-BIT SINGLE-CHIP MICROCONTROLLERS |
| UPD799 | 2048-BIT CCD IMAGE SENSOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPD784935AGF-113-3BA | 制造商:NEC Electronics Corporation 功能描述: |
| UPD784938AGF-188-3BA | 制造商:NEC Electronics Corporation 功能描述: |
| UPD789104AMC(A)-968-5A4-E2 | 制造商:Renesas Electronics Corporation 功能描述: |
| UPD789104AMC-671-5A4-E1 | 制造商:Renesas Electronics Corporation 功能描述: |
| UPD789104AMC-672-5A4-E1 | 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)。