Apollo JDI Display Daughter Board Specification 2016 Sept
JDI Full Reflective LCD Daughter Board with Apollo Mini-EVB features direct control interface of JDI full reflective LCD, power management circuit with multiple outputs, flexible power control options, signal generation capabilities, software library availability for various functions and graphic APIs, compact form factor, and compatibility with Ambiqmicro Apollo Mini-EVB. The daughter board allows testing of power consumption and provides test points for control signals. The hardware is designed to be similar to JDI LCD 218x218 driver board.
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Apollo + JDI display daughter board specification 2016 Sept.
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)
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.
JDI LCD daughter 218x218 Target hardware is going to be similar as the JDI LCD 218x218 driver board
(*MCU) No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 SYMBOL VCK VST HCK HST BLUE[0] GREEN[0] Green signal for odd Pixels RED[0] Red signal for odd Pixels RED[1] Red signal for even Pixels GREEN[1] Green signal for even Pixels BLUE[1] Blue signal for even Pixels ENB Input enable signal XRST Reset signal for H/V-Driver H/V VDDP_EN Enable H-Driver and Memory circuit of Pixels VLCD_EN Enable Power supply pin for interface VDDC_EN Enable Power supply pin for V-Driver VCOM Common terminal voltage of LCD (60Hz ) FRP Black signal voltage of LCD ( VCOM) XFRP White signal voltage of LCD (VCOM ) FUNCTION REMARKS Clock for driving of V-Driver Start signal for driving of V-Driver Clock for driving of H-Driver Start signal for driving of H-Driver Blue signal for odd Pixels * * * (only 218x218) * 19 Backlight Backlight LED driving signal LED *
