sh66k51a SinoWealth Micro-Electronics Corp. Ltd, sh66k51a Datasheet - Page 10

• Manufacturer Part Number: sh66k51a
• Description: 2k 4-bit Micro-controller With Lcd Driver
• Manufacturer: SinoWealth Micro-Electronics Corp. Ltd

Configuration of System Register (continued):
3. ROM
The ROM can address 2048 X 16 bits of program area from $000 to $7FF.
3.1. Vector Address Area ($000 to $004)
The program is sequentially executed. There is an area address $000 through $004 that is reserved for a special interrupt
service routine such as starting vector address.
*JMP instruction can be replaced by any instruction.
Address
$24 - 27
$1C
$1D
$1A
$1B
$1E
$1F
$19
$20
$21
$22
$23
Address
$000
$001
$002
$003
$004
PBCR.3
PCCR.3
PDCR.3
CFH3
CFH7
CFL3
CFL7
WDT
Bit3
-
-
-
PCCR.2
PDCR.2
PBCR.2
WDT.2
CFH2
CFH6
CFL2
CFL6
Bit2
-
-
-
PBCR.1
PCCR.1
PDCR.1
PECR.1
WDT.1
CFH1
CFH5
CFL1
CFL5
Bit1
Instruction
-
-
-
JMP*
JMP*
JMP*
JMP*
JMP*
PCCR.0
PDCR.0
PBCR.0
PECR.0
WDT.0
CFH0
CFH4
CFL0
CFL4
Bit0
-
-
-
10
R/W
R/W PORTB input/output control
R/W PORTC input/output control
R/W PORTD input/output control
R/W PORTE input/output control
R/W
R/W Carrier low level timer load data register
R/W Carrier low level timer load data register
R/W Carrier high level timer load data register
R/W Carrier high level timer load data register
R
-
-
-
Reserved
Bit0 - 2: Watchdog timer control
Bit3: Watchdog timer overflow flag
Reserved
Reserved
Jump to Base timer interrupt service routine
Jump to PORTB/C interrupt service routine
Jump to Timer0 interrupt service routine
Jump to Reset service routine
Remarks
Reserved
Remarks
SH66K51A