HT95L20P datasheet(9/42 Pages) HOLTEK

9 / 42 page

HT95L100/10P

Rev. 0.10

October 1, 2002

Preliminary

Address

Function

Description

TMR1C

Timer/Event Counter 1 control register

Port A data register

PAC

Port A control register

Port B data register

PBC

Port B control register

DIALERIO

Dialer I/O register

Port E data register (bit3~bit0)

PEC

Port E control register (bit3~bit0)

INTC1

Interrupt control register 1

Embedded control register

DTMFC

DTMF generator control register

DTMFD

DTMF generator data register

LINE

Line control register

RTCC

Real time clock control register

MODE

Operation mode control register

LCDIO

LCD segment and I/O option register

LCDC

LCD driver control register

PFDC

PFD control register

PFDD

PFD data register

General purpose RAM

40~FF

BANK0 RAM

General purpose RAM space

40~FF

BANK1 RAM

General purpose RAM space

40~FF

BANK2 RAM

General purpose RAM space

40~FF

BANK3 RAM

General purpose RAM space

40~FF

BANK4 RAM

General purpose RAM space

40~FF

BANK5 RAM

General purpose RAM space

LCD RAM display memory

8C~9F

LCD RAM

LCD RAM mapping space for COM0~COM7

Indirect addressing register

Location 00H and 02H are indirect addressing registers

that are not physically implemented. Any read/write op-

eration of [00H] and [02H] will access the memory

pointed to by MP0 and MP1, respectively. Reading loca-

tion [00H] or [02H] indirectly returns the result 00H,

while writing it leads to no operation. MP0 is indirectly

addressable in bank0, but MP1 is available for all banks

by switch BP [04H]. If BP is unequal to 00H, the indirect

addressing mode to read/write operation from 00H~3FH

will return the result as same as the value of bank0.

The memory pointer registers MP0 and MP1 are 8-bits

registers, and the bank pointer register BP is 5-bits reg-

ister.

Accumulator

The accumulator is closely related to ALU operations. It

is also mapped to location 05H of the data memory and

can operate with immediate data. All data movement

between two data memory locations must pass through

the accumulator.

Arithmetic and logic unit

- ALU

This circuit performs 8-bit arithmetic and logic opera-

tions and provides the following functions:

· Arithmetic operations (ADD, ADC, SUB, SBC, DAA)

· Logic operations (AND, OR, XOR, CPL)

· Rotation (RL, RR, RLC, RRC)

· Increment and Decrement (INC, DEC)

HT95L20P 数据表(PDF) 9 Page - Holtek Semiconductor Inc

HT95L20P 数据表(HTML) 9 Page - Holtek Semiconductor Inc

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

数据表下载

链接网址

HT95L20P 数据表(PDF) 9 Page - Holtek Semiconductor Inc

HT95L20P 数据表(HTML) 9 Page - Holtek Semiconductor Inc

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

数据表 下载

链接网址

数据表下载