L9805 データシートの表示（PDF） - STMicroelectronics

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L9805

Super Smart Power Motor Driver with 8-BIT MCU, CAN Interface, 16K EPROM, 256Bytes RAM, 128 Bytes EEPROM, 10 Bit ADC, WDG, 2 Timers, 2 PWM Modules, Full H-Bridge Driver

STMicroelectronics 

L9805

1.5 REGISTER & MEMORY MAP

As shown in the Table 1, the MCU is capable of

addressing 64K bytes of memories and I/O regis-

ters. 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 EPROM/

ROM. The RAM space includes 64bytes for the

stack from 0140h to 017Fh.

The highest address bytes contain the user reset

and interrupt vectors.

Table 1. Memory Map

Address

0000h

0001h

0002h

0003h

0004h

0005h

0006h

0007h

0008h to

000Fh

0010h

0011h

0012h

0013h

0014h

0015h

0016h

0017h

0018h

0019h

001Ah

001Bh

001Ch

001Dh

001Eh

001Fh

0020h

0021h

0022h

0023h to

0029h

002Ah

002Bh

002Ch

002Dh

002Eh

002Fh

0030h

Block

Port A

Port B

Register La-

bel

PADR ..

PADDR ..

PAOR ..

PBDR ..

PBDDR ..

PBOR ..

Register name

Data Register

Data Direction Register

Option Register

Not Used

Data Register

Data Direction Register

Option Register

Not Used

RESERVED

PWM1

PWM2

Power

Bridge

P1CYRH ..

P1CYRL ..

P1DRH ..

P1DRL ..

P1CR ..

P1CTH ..

P1CTL ..

P2CYRH ..

P2CYRL ..

P2DRH ..

P2DRL ..

P2CR ..

P2CTH ..

P2CTL ..

MISCR ..

PBCSR ..

DCSR ..

PWM1 Cycle Register High

PWM1 Cycle Register Low

PWM1 Duty Register High

PWM1 Duty Register Low

PWM1 Control Register

PWM1 Counter Register High

PWM1 Counter Register Low

RESERVED

PWM2 Cycle Register High

PWM2 Cycle Register Low

PWM2 Duty Register High

PWM2 Duty Register Low

PWM2 Control Register

PWM2 Counter Register High

PWM2 Counter Register Low

RESERVED

Miscellaneous Register

Bridge Control Status Register

Dedicated Control Status Register

RESERVED

WDG

EEPROM

EPROM

CRC

WDGCR ..

WDGSR ..

EECR ..

ECR1

ECR2

CRCL

CRCH

Watchdog Control Register

Watchdog Status Register

EEPROM Control register

EPROM Control register 1

EPROM Control register 2

CRCL Test Register

CRCH Test Register

Reset

Status

00h

00h

00h

00h

00h

00h

Remarks

R/W

R/W

R/W

Absent

R/W

R/W

R/W

Absent

00h

R/W

00h

R/W

00h

R/W

00h

R/W

00h

R/W

00h

Read Only

00h

Read Only

00h

R/W

00h

R/W

00h

R/W

00h

R/W

00h

R/W

00h

Read Only

00h

Read Only

00h

see Section 3.4

00h

R/W

00h

R/W

7Fh

R/W

00h

R/W

00h

R/W

ST INTERNAL

USE ONLY

ST INTERNAL

USE ONLY

9/103

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