TMP91xy20AFG Toshiba, TMP91xy20AFG Datasheet - Page 249

• Manufacturer Part Number: TMP91xy20AFG
• Manufacturer: Toshiba

Specifications of TMP91xy20AFG

• Package: LQFP144
• Rom Types(m=mask,p=otp, F=flash,e=eeprom): M
• Rom Combinations: 8
• Ram Combinations: 8
• Architecture: 16-bit CISC
• Usb/spi Channels: -
• Uart/sio Channels: 1
• I2c/sio Bus Channels: 1
• (s)dram Controller: 1
• Adc 10-bit Channel: 8
• Da Converter: -
• Timer 8-bit Channel: 4
• Timer 16-bit Channel: 1
• Pwm 8-bit Channels: -
• Pwm 16-bit Channels: -
• Cs/wait Controller: 4
• Dual Clock: Y
• Number Of I/o Ports: 77
• Power Supply Voltage(v): 3.0 to 3.6

LD7
LD6
LD5
LD4
LD3
LD2
LD1
LD0
Figure 3.14.5 Connection between LCD Bus of TMP91C820A and Data Bus of LCDD
With the intrinsic property of gray levels, a pixel is decoded in each gray level from
different memory size.
gray, 3 bits for 8 gray and 4 bits for 16 gray. Sing bits of display memory has some
differences for each gray scale or sort of memory.
(Figure 3.14.5). But TMP91C820A outputs data of px0 to PE7 (LD7), and data of px7 to
PE0 (LD0). Therefore PE0 (LD0) should be connected to the MSB of LCD driver (e.g.,
DI7) according to LCD driver you use. Please note that the way TMP91C820A outputs
the data differs from LCD controller built in TLCS-900/L1 series of TOSHIBA (e.g.,
TMP91C815, TMP91C016, TMP91C025 etc.).
TMP91C820A can select four display scale; monochrome, 4 gray, 8 gray and 16 gray.
A pixel use a bit in memory for monochrome, while a pixel use 2 bits in memory for 4
And “px” in above Figure 3.14.4 corresponds to the image of LCD panel as below
Segment
driver
Monochrome
(SRAM mode)
Monochrome
(SDRAM mode)
4 gray
(SRAM/SDRAM)
8 gray
(SRAM/SDRAM)
16 gray
(SRAM/SDRAM)
DI7
DI6
DI5
DI4
DI3
DI2
DI1
DI0
Figure 3.14.4 Gray display and using bit in memory
LCD panel
px0 px1 px2 px3 px4 px5 px6 px7 px78
91C820A-247
px0 px1 px2 px3 px4 px5 px6 px7 px8 px9 px10 px11 px12 px13 px14 px15
px0 px1 px2 px3 px4 px5 px6 px7
px0
px0
px0
px1
px2
px1
px1
px3
px8 px9 px10 px11 px12 px13 px14 px15
px4
px2
px2
px5
TMP91C820A
px6
： Don’t care
2008-02-20
px3
px3
px7