Ym12864c pdf

Video Audio icon An illustration of an audio speaker. Audio Software icon An illustration of a 3. Software Images icon An illustration of two photographs.

Images Donate icon An illustration of a heart shape Donate Ellipses icon An illustration of text ellipses. EMBED for wordpress. Want more? Advanced embedding details, examples, and help! I have already done some testing with a RTC and it's all good. Niko, Did you solder the appropriate jumper for the protocol you used? Using the right library? I had the same issue with their x64 LCD. I found that the contrast was turned down out of the box. On mine there is a very small contrast knob on the back and there is a very small area where it allows you to see anything.

The contrast adjustment knob is circled in the picture of the shield on this web page, look toward the bottom of the page:. You are talking about an adapter not the assembled LCD that they sell.

I tried a simply hack for adding the contrast control to LCD module by soldering two male header on back of the serial adapter PCB, and after i have connected the pin 3 Vo, operating voltage for LCD and the pin 18 Vout, negative voltage output , this put to the maximum possible the contrast in LCD module circa V to pin 3.

I've tested the communication via default UART using an Arduino Duemilanove but also with a USB to serial adapter and sending the command via a terminal at baud, the BL0 and BL1 commands working correctly turning on and off the backlight, but no more. I found another thing to be done with the ZW display to function properly with the Digole Adapter: on the Display, shorten J1 - this will connect Pin 18 Vout to the external potentiometer as described above - 2nd thing I found is to add a pullup resistor to pin 15 PSB - after these modifications, the display worked properly using the test program.

After reading the forum and information about it at the Arduino. Each channel elects the degree to which it will be distorted by the LFO, if at all.

This could be used, for example, in a guitar solo. Unfortunately, these timers do not cause interrupts - they must be read by the software to determine if they have finished counting. Page 5 - original - top. These operators may be arranged in eight different configurations, called "algorithms".

Following is a diagram of the algorithms. Page 6 - original - top. Page 7 - original - top. The remainder of the registers apply to a single FM channel, or to an operator in that channel. Registers that refer to the channel as a whole are:. Registers that refer to each operator make up the remainder. The four operator's connections are determined by the algorithm used, but the envelope is always specified individually for each operator.

In the case of FM channels 3 and 6, the frequency may be specified individually for each operator. Page 8 - original - top. The sound starts when the key is depressed, a process called 'key on'. The sound has an attack, a strong primary decay, followed by a slow secondary decay.

The sound continues this secondary decay until the key is released, a process called 'key off'. The sound then begins a rapid final decay, representing for example a piano note after the key has been released and the damper has come down on the strings.

The envelope is represented by the above amplitudes and angles, and a few supplementary registers. Used in the above diagram are:. Page 9 - original - top. The YM may be accessed from either the or the Z In both cases, however, the bus is only 8 bits wide. These will be referred to as to To write to Part I, write the 8 bit address to and the data to To write to Part II, write the 8-bit address to and the data to Delay until bit 7 returns to 0.

CAUTION: in the case of registers that are "ganged together" to form a longer number, for example the bit Timer A value or the bit frequencies, write the high register first. Page 10 - original - top. Page 11 - original - top.

It is triply enabled, as there is:. If the LFO is desired, enable it by register 22H. Next, select which channels will be affected by the LFO, to what degree, and whether their amplitude or frequency is affected, by setting registers B4-B6H. Page 12 - original - top. Registers 24H and 25H are ganged together to form bit Timer A , with register 25H containing the least significant bits. They should be set in the order 24H, 25H. The timer lasts:. Register 27H controls the software timers and the Channel 3 and 6 mode , two entirely separate items.

A normal channel's operators use offsets of integral multiples of a single frequency. In special mode, each operator has an entirely separate frequency. Channel 3 operator 1's frequency is in registers A2 and A6.