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参数资料
| 型号： | L9942 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, PDSO36 |
| 封装： | POWER, SO-36 |
| 文件页数： | 20/21页 |
| 文件大小： | 161K |
| 代理商： | L9942 |
MICROCONTROLLER SECTION
General description
This section comprises the following macrocells:
ST6 CORE
128 bytes RAM
4 Kbytes ROM
8-BIT TIMER (TIMER1)
Digital WATCHDOG/TIMER
I/O PORT A (4 I/O lines)
For the explanation of the above mentioned blocks please refer to the following standard ST6 documen-
tation (Note that any reference to external pins and electrical characteristics does not hold. In case of dif-
ferent information, the correct ones are those in this document.
Table 1. Data Memory Space.
DATA RAM
000h
± 03Fh
DATA ROM WINDOW AREA 2)
040h
± 07Fh
X REGISTER
X
080h
Y REGISTER
Y
081h
V REGISTER
V
082h
W REGISTER
W
083h
DATA RAM
084h
± 0BFh
RESERVED
0C0h
PORT A DATA REGISTER
DRA
0C1h
RESERVED
0C2h0C4h
PORT A DIRECTION REGISTER
DDRA
0C5h
RESERVED
0C6h,0C7h
INTERRUPT OPTION REGISTR 1)
IOR
0C8h
DATA ROM WINDOW REGISTER 1)
DWR
0C9h
RESERVED
0CA0
± CCh
PORT A OPTION REGISTER
ORA
0CDh
RESERVED
0CEh
± 0D1h
TIMER 1 PRESCALER REGISTER
PSC1
0D2h
TIMER 1 COUNTER REGISTER
TCR1
0D3h
TIMER 1 STATUS/CONTROL REGISTER
TSCR1
0D4h
RESERVED
0D5h-0D7h
WATCHDOG REGISTER
DWDR
0D8h
RESERVED
0D9h
BUS INTERFACE REGISTER
BIR
0DCh
OSCILLATOR CONTROL REGISTER
OSCR
0DDh
RESERVED
0DEh-0DFh
CONTACT MONITORS BIASING REGISTER
CMBR
0E0h
CONTACT MONITORS STATUS REGISTER 2)
CMSR
0E1h
BRIDGE/PORT CONTROL REGISTER
BPCR
0E2h
BRIDGE STATUS REGISTER
BSR
0E3h
RESERVED
0E4h-0E7h
CONTACT MONITOR INTERRUPT REGISTER
CMIR
0E8H
CONTACT MONITOR COMPARE REGISTER
CMCR
0E9h
RESERVED
0EAh-0EFh
CAN TRANSMIT IDENTIFIER HIGH
TIDH
0F0h
CAN TRANSMIT IDENTIFIER LOW
TIDL
0F1H
CAN TRANSMIT DATA HIGH
TDH
0F2h
CAN TRANSMIT DATA LOW
TDL
0F3h
CAN RECEIVE IDENTIFIER HIGH
RIDH
0F4h
CAN RECEIVE IDENTIFIER LOW
RIDL
0F5h
CAN RECEIVE DATA HIGH
RDH
0F6h
CAN RECEIVE DATA LOW
RDL
0F7h
CAN IDENTIFIER MASK
IDM
0F8h
CAN IDENTIFIER FILTER
IDF
0F9h
CAN TRANSMIT ERROR COUNTER
TEC
0FAh
CAN RECEIVE ERROR COUNTER
REC
0FBh
CAN STATUS REGISTER
CSTR
0FCh
CAN CONTROL REGISTER
CCTR
0FDh
CAN TEST REGISTER
CTER
0FEh
ACCUMULATOR
A
0FFh
1) write only; 2) read only.
L9942
8/21
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