Motorola MC9S12DP256, CML12S-DP256 manual Mcuport, Analog Port

C M L 1 2 S D P 2 5 6 0 7 / 1 7 / 0 2

The VDD supply is for reference or external 2.5V input only and should not be loaded by external circuitry or damage to the HCS12 device may occur.

MCU_PORT

+5V	60	59
PT7	58	57
PT5	56	55
PT3	54	53
PT1	52	51

**PK0 50 49

**PK2 48 47

**PK4 46 45 GND 44 43 PP1 42 41 PP3 40 39 PP5 38 37 PP7 36 35

**PM1 34 33 PM3 32 31 PM5 30 29 PM7 28 27 PJ1 26 25 PJ7 24 23

**PS7 22 21

**PS5 20 19

**PS3 18 17

**PS1 16 15 GND 14 13 GND 12 11

**PB7/D7 10 9

**PB5/D5 8 7

**PB3/D3 6 5

**PB1/D1 4 3 GND 2 1

GND

PT6

PT4

PT2

PT0 PK1 ** PK3 ** PK5 ** +5V PP0 PP2 PP4 PP6 PM0 ** PM2 PM4 PM6 PJ0 PJ6 PS6 ** PS4 ** PS2 ** PS0 ** +5V VREGEN PB6/D6 ** PB4/D4 ** PB2/D2 ** PB0/D0 ** +5V

The MCU_PORT provides access to the peripheral features and I/O lines of the HCS12.

**Note signals with alternate connections on the development board:

PB0 - 7 [D0 - 7] provide address / data on the expanded HCS12.

PK0 - 5 [XA14 - XA19] provide high order paged address lines on the expanded HCS12.

PM0 - 1 [CAN RXD0, TXD0] CAN channel 0 to CAN Port transceiver.

PS0 - 1 [COM Port RXD0, TXD0]

PS2 - 3 [JP3 Port RXD1, TXD2]

PS4 - 7 [SPI Port] provides LCD_PORT serial interface.

ANALOG PORT

PAD0/AN0	1	2	PAD8/AN8
PAD1/AN1	3	4	PAD9/AN9
PAD2/AN2	5	6	PAD10/AN10
PAD3/AN3	7	8	PAD11/AN11
PAD4/AN4	9	10	PAD12/AN12
PAD5/AN5	11	12	PAD13/AN13
PAD6/AN6	13	14	PAD14/AN14
PAD7/AN7	15	16	PAD15/AN15
VRH	17	18	VRL
VDDA	19	20	GND

The ANALOG port provides access to the Port AD0 and Port AD1 Analog-to-Digital input lines.

PAD0 – PAD15 HC12 Port AD0-15 is an input port or AN0 - AN15 A/D Converter inputs.

VRH / VRL HC12 A/D Converter Reference Pins. See HCS12 A/D User guide. To provide an external reference voltage, R3 and R4 need to be removed to apply external VRH or VRL respectfully. See schematic.

16