TMP91xy25FG Toshiba, TMP91xy25FG Datasheet - Page 202

• Manufacturer Part Number: TMP91xy25FG
• Manufacturer: Toshiba

Specifications of TMP91xy25FG

• Package: LQFP100
• Rom Types(m=mask,p=otp, F=flash,e=eeprom): Romless
• Rom Combinations: Romless
• Ram Combinations: Ramless
• Architecture: 16-bit CISC
• Usb/spi Channels: -
• Uart/sio Channels: 2
• I2c/sio Bus Channels: -
• (s)dram Controller: -
• Adc 10-bit Channel: 4
• Da Converter: -
• Timer 8-bit Channel: 4
• Timer 16-bit Channel: -
• Pwm 8-bit Channels: -
• Pwm 16-bit Channels: -
• Cs/wait Controller: 4
• Dual Clock: Y
• Number Of I/o Ports: 49
• Power Supply Voltage(v): 3.0 to 3.6

3.14.4.2 Timer Out LCDCK
timer out (TA3OUT) outputs from internal TMRA23.
Example:
Reference: To maintain quality for display, please refer to following value for each gray
under a decimal point.
LCD source clock (LCDCK) can select low frequency (XT1, XT2: 32.768 [kHz]) or
The next equation calculates frame period.
Source clock for LCDC defines as XT [Hz] and then this t
Therefore if you set the frame period at 70 [Hz] under 120 COM,
XT should be above value.
In order to make XT = 29400 [Hz] under fc = 6 [MHz] with φT1 of timer3,
However T3 = (TA3REG) is 12.75 after calculate, it’s impossible to set the value
So if (TA3REG) is set 0CH, XT = 31250 [Hz]. And because of D = 3.5,
Frame period = 31250/(127 × 3.5)
Frame period = 1/(t
t
1/XT = T3 × 2 × 8/fc [s]
in short, XT = fc/(T3 × 2 × 8) [Hz]
Further if f
XT = 120 × 3.5 × 70
Frame period = 31250/(120 ×3.5)
LP
scale.
(You have to use settlement of frame frequency function, frame invert
adjustment function and timer out LCDCK.)
Monochrome: Frame period = 70 [Hz]
Here indicates the method that frame period is set 70 [Hz] by selecting
TA3OUT for source clock of LCD (fc = 6 [MHz], 120 COM).
= D/XT
= 29400 [Hz]
FP
= 74.404 [Hz]
is 127 (COM + 7) with correction,
= 70.30 ... [Hz]
91C025-201
LP
× f
FP
) [Hz]
T3: the value of timer resister (TA3REG)
t
D: The value is 3.5 at 120 COM
LP
: The period of D2BLP
LP
represents
TMP91C025
2007-02-28