Changes S12compact V1.10 -> V1.20 ================================= MCU Oscillator -------------- - oscillator circuit changed from Colpitts to (more robust) Pierce mode - R29 added - C1, C2 value 22p - /XCLKS pulled down using R5 - polarity of LED D2 reversed (controlled by PE7 = /XCLKS) - Pierce mode configuration is compatible with MC9S12XDP512 osc ADC/DAC ------- - both ADS8344N and ADS8344E can now be used (modified SMD land pattern to match both DB and DBQ package footprint) RTC --- - IC7 RTC455A -> R2051S01 - uses I2C (SDA, SCL) - R10, R11 now always equipped - /SPICS0 not in use anymore, available on new X3 pin - BR11 added (RTC may be used to generate system reset) - Q2, R28, C32, C33, C34 added - C25, D3, D4 removed - /SPIWR not needed anymore, renamed to PH7 (still available at X5/10) SCI1/USB -------- - IC15 FT232BM -> FT232RL - X6 USB Mini-B socket - X3 removed (SCI1 always assigned to USB function) - JP1 added to select Self Powered / Bus Powered Mode - FB3 added - C37, C38 value 10n - R18..R23 value 330R - R24 value 4k7 - R25 value 10k - IC16 removed - T1, Q2, C43, C44 removed - (BR11, Q2, C32, C33, C34 are part of RTC block now) SerFlash -------- - IC14 AT45DB161B-R -> AT45DB161D-S (Wide SO8 package) - R17 value 22k, marked optional (IC14 always populated) Miscellaneous Changes --------------------- - IC2 RN5VD46A -> NCP303LSN46 (slightly different delay timing) - R1, R2, R5 value 4k7 - R13, R15 value 10k - R14 value 120R - Logo and labels on PCB updated