LPC920F 查看數據表（PDF） - Unspecified

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LPC920F

8-bit microcontrollers with two-clock 80C51 core 2 kB/4 kB/8 kB 3 V low-power Flash with 256-byte data RAM

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Table 4: Special function registers…continued

* indicates SFRs that are bit addressable.

Name

Description

SFR Bit functions and addresses

addr. MSB

LSB

Reset value

Hex Binary

I2SCLL

Serial clock generator/SCL

duty cycle register LOW

DCH

00

00000000

I2STAT I2C status register

D9H STA.4 STA.3 STA.2 STA.1 STA.0

0

0

0

F8

11111000

Bit address AF

AE

AD

AC

AB

AA

A9

A8

IEN0*

Interrupt enable 0

A8H EA EWDRT EBO ES/ESR ET1

EX1

ET0

EX0 00[1] 00000000

Bit address EF

EE

ED

EC

EB

EA

E9

E8

IEN1*

Interrupt enable 1

E8H

-

EST

-

-

-

EC

EKBI

EI2C 00[1] 00x00000

Bit address BF

BE

BD

BC

BB

BA

B9

B8

IP0*

Interrupt priority 0

B8H

-

PWDRT PBO PS/PSR PT1

PX1

PT0

PX0 00[1] x0000000

IP0H

Interrupt priority 0 HIGH

B7H

-

PWDRT PBOH

PSH/

PT1H

PX1H

PT0H

PX0H 00[1] x0000000

H

PSRH

Bit address FF

FE

FD

FC

FB

FA

F9

F8

IP1*

Interrupt priority 1

F8H

-

PST

-

-

-

PC

PKBI

PI2C 00[1] 00x00000

IP1H

Interrupt priority 1 HIGH

F7H

-

PSTH

-

-

-

PCH

PKBIH PI2CH 00[1] 00x00000

KBCON Keypad control register

94H

-

-

-

-

-

-

PATN

KBIF 00[1] xxxxxx00

_SEL

KBMASK Keypad interrupt mask

86H

register

00

00000000

KBPATN Keypad pattern register

93H

FF

11111111

Bit address 87

86

85

84

83

82

81

80

P0*

Port 0

80H T1/KB7 CMP1 CMPREF CIN1A CIN1B CIN2A CIN2B CMP2

[1]

/KB6

/KB5

/KB4

/KB3

/KB2

/KB1

/KB0

Bit address 97

96

95

94

93

92

91

90

P1*

Port 1

90H

-

-

RST

INT1

INT0/ T0/SCL RXD

TXD

[1]

SDA

Bit address B7

B6

B5

B4

B3

B2

B1

B0

P3*

Port 3

B0H

-

-

-

-

-

-

XTAL1 XTAL2

[1]

P0M1

Port 0 output mode 1

84H (P0M1.7) (P0M1.6) (P0M1.5) (P0M1.4) (P0M1.3) (P0M1.2) (P0M1.1) (P0M1.0) FF

11111111

P0M2

Port 0 output mode 2

85H (P0M2.7) (P0M2.6) (P0M2.5) (P0M2.4) (P0M2.3) (P0M2.2) (P0M2.1) (P0M2.0) 00

00000000

P1M1

Port 1 output mode 1

91H (P1M1.7) (P1M1.6)

-

(P1M1.4) (P1M1.3) (P1M1.2) (P1M1.1) (P1M1.0) D3[1] 11x1xx11

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