參數(shù)資料
型號: S1C6S460D
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 2 MHz, MICROCONTROLLER, UUC124
封裝: 4.69 X 4.68 MM, DIE-124
文件頁數(shù): 50/107頁
文件大?。?/td> 788K
代理商: S1C6S460D
S1C6S460 TECHNICAL MANUAL
EPSON
39
CHAPTER 6: INPUT/OUTPUT PORTS
R40, R42 (F54H [D0, D2], R/W) when FOUT and FOUT output is selected
Controls the FOUT and FOUT (clock) output.
When "0" is written: Clock output
When "1" is written: High level (DC)
Reading: Valid
When R42 is set to FOUT output, clock with the specified frequency is generated from R42 terminal by
writing "0" on R42 register.
By writing "1", the R42 terminal will go high (VDD).
The same applies to R40. The clock phase when FOUT signal is output from R40 is antiphase to that of
R42.
At initial reset, R40 and R42 are set to "1".
6.2.5 Programming notes
(1) When BZ, BZ, FOUT, FOUT, and PTCLK (DC) are selected by mask option, a hazard may be observed
in the output waveform when the data of the output register changes.
(2) Because the R00–R03, R10–R13, R20–R23, and R30–R32 (R33) ports gain high impedance during initial
reset, be careful when using them as interface with external devices and the like.
(3) When R33 port is selected for 2 states and DC (PTCLK) output by mask option, R33 terminal becomes
undefined at initial reset.
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