1. Apollo + JDI display daughter board specification 2016 Sept.

2. JDI Full Reflective LCD Daughter Board with Apollo mini-EVB
Features
Support direct control interface of JDI full reflective LCD.
Power management circuit with 6.6V, 4.5V and 3.2V DC outputs for LPM012A154A requested power supplies. All power supplies can be controlled individually by MCU IO ports. Different power on/off sequence can be implemented flexibly with user software. Power supplies can also be enabled automatically by shorting the jumpers provided on board to save IO resources.
VCOM, FRP and XFRP signals can be generated by on board 64Hz clock source and are selectable via jumpers to be supplied by MCU IO ports.
Expansion connector interface compatible with Ambiqmicro Apollo Mini-EVB.
Power consumption on the daughter board can be tested via the test circuit on mini-EVB.
Test points for all control signals.
Compact form factor (42 x 50mm)

3. Software Library Availability
Apollo JDI driver feature:
Supports power up and power down timing sequence.
Supports full screen update and partial screen update.
Partial update supports background image fill option.
Support mono-color display.
Support following graphic APIs:
Line draw (1 pixel thickness)
Circle draw (with inner filling)
Ellipse draw (under-development)
Bit map draw
Character draw (Number, English and Chinese) (demo ready)
Font select for English.
Bitmap to source file conversion:
1bit (mono-color), 3 bit (8 color) and 6 bit (64 color)
Demo:
Analog watch dial (mono-color and 8 color)
Ambiqmicro logo display + company name flashing.

4. JDI LCD daughter 218x218
Target hardware is going to be similar as the JDI LCD 218x218 driver board

5. Appendix:

6. 控制引脚 (*为推荐使用MCU控制的信号)
No.
SYMBOL
FUNCTION
REMARKS 1
VCK
Clock for driving of V-Driver 必须 2
VST
Start signal for driving of V-Driver 3
HCK
Clock for driving of H-Driver 4
HST
Start signal for driving of H-Driver 5
BLUE[0]
Blue signal for odd Pixels 6
GREEN[0]
Green signal for odd Pixels 7
RED[0]
Red signal for odd Pixels 8
RED[1]
Red signal for even Pixels 9
GREEN[1]
Green signal for even Pixels 10
BLUE[1]
Blue signal for even Pixels 11
ENB
Input – enable signal 12
XRST
Reset signal for H/V-Driver H/V 13
VDDP_EN
Enable H-Driver and Memory circuit of Pixels
可由硬件实现 * 14
VLCD_EN
Enable Power supply pin for interface 15
VDDC_EN
Enable Power supply pin for V-Driver
可由硬件实现 * (only 218x218) 16
VCOM
Common terminal voltage of LCD (60Hz刷新信号)
可外部提供 * 17
FRP
Black signal voltage of LCD (同VCOM)
可外部提供 18
XFRP
White signal voltage of LCD (VCOM反相) 19
Backlight
Backlight LED driving signal 背光LED控制信号
按需求 *

7. 218x inch 64色屏

8. 240x inch 64色屏

9. Schedule