參數(shù)資料
型號: SAA5500PS/NNNN
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 12 MHz, MICROCONTROLLER, PDIP52
封裝: 0.600 INCH, PLASTIC, SDIP-52
文件頁數(shù): 24/80頁
文件大小: 340K
代理商: SAA5500PS/NNNN
1999 Oct 27
30
Philips Semiconductors
Preliminary specication
Standard TV microcontrollers with
On-Screen Display (OSD)
SAA55xx
Fig.10 Indirect addressing of Auxiliary RAM.
handbook, full pagewidth
MBK958
SFR XRAMP = 00H
FFH
00H
SFR XRAMP = 01H
FFH
00H
0000H
00FFH
0100H
01FFH
SFR XRAMP = FEH
MOVX @ DPTR,A
MOVX A, @ DPTR
MOVX @ Ri,A
MOVX A, @ Ri
FFH
00H
SFR XRAMP = FFH
FFH
00H
FE00H
FEFFH
FF00H
FFFFH
9
POWER-ON RESET
An automatic reset can be obtained when VDD is turned on
by connecting the RESET pin to VDDP through a
10
F capacitor, providing the VDD rise time does not
exceed 1 ms, and the oscillator start-up time does not
exceed 10 ms.
To ensure correct initialisation, the RESET pin must be
held high long enough for the oscillator to settle following
power-up, usually a few ms. Once the oscillator is stable,
a further 24 clocks are required to generate the reset (two
machine cycles of the microcontroller). Once the above
reset condition has been detected an internal reset signal
is triggered which remains active for 2048 clock cycles.
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