L9803 datasheet(11/126 Pages) STMICROELECTRONICS

11 / 126 page

L9803

General description

11/126

PA5/OCMP2_2-PA6/OCMP1_2: I/Os or Output Compares on Timer 2. Alternate function

software selectable (by setting OC2E or OC1E in CR2 register: bit 6 or 7 at 0041h). When

used as alternate functions, these pins are push-pull outputs as requested by Timer 2.

Otherwise, these pins are triggered floating inputs or push-pull outputs.

PA7/ICAP2_2-PB0/ICAP1_2: I/Os or Input Captures on Timer 2. Before using these I/Os as

alternate inputs, they must be configured by software in input mode (DDR=0). In this case,

these pins are triggered floating inputs. Otherwise (I/O function), these pins are triggered

floating inputs or push-pull outputs.

PB1/EXTCLK_2: PB1 I/O or External Clock on Timer 2. Before using this I/O as alternate

input, it must be configured by software in input mode (DDR=0). In this case, this pin is a

triggered floating input. Otherwise (I/O function), this pin is a triggered floating input or a

push-pull output.

TM: Input. This pin must be held low during normal operating modes.

VDD: Output. 5V Power supply for digital circuits, from internal voltage regulator.

OSCIN: Input Oscillator pin.

OSCOUT: Output Oscillator pin.

GND: Ground for digital circuits.

VBR: Power supply for Right half-bridge.

OUTR: Output of Left half-bridge.

PGND: Ground for power transistor.

OUTL: Output of Right half-bridge.

VBL: Power supply for Left half-bridge.

VB1: Power supply for voltage regulators.

VB2: Pre-regulated voltage for analog circuits.

CAN_L: Low side CAN bus output.

CAN_H: High side CAN bus input.

NRESET: Bidirectional. This active low signal forces the initialization of the MCU. This event

is the top priority non maskable interrupt. It can be used to reset external peripherals.

PWMI: PWM input. Directly connected to Input Capture 2 on Timer 2.

PWMO: PWM output. Connected to the output of PWM2 module.

AGND: Ground for all analog circuitry (except power bridge).

VCC: Output. 5V power supply for analog circuits, from internal voltage regulator.

1.4

As shown in the Table 1, the MCU is capable of addressing 64K bytes of memories and I/O

registers. In this MCU, 63742 of these bytes are user accessible.

The available memory locations consist of 128 bytes of I/O registers, 256 bytes of RAM, 128

bytes of EEPROM and 16Kbytes of user ROM. The RAM space includes 64bytes for the

stack from 0140h to 017Fh.

L9803 データシート(PDF) 11 Page - STMicroelectronics

L9803 データシート(HTML) 11 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

データシートダウンロード