ST2602B datasheet(2/34 Pages) SITRONIX

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ST2602B

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GENERAL DESCRIPTION

The ST2602B is a 8-bit integrated microcontroller designed

with CMOS silicon gate technology. The true static CPU core,

power down modes and dual oscillators design makes the

ST2602B suitable for power saving and long battery life

designs. The ST2602B integrates various logic to support

functions on-chip which are needed by system designers.

The ST2602B features the capacity of memory access of

maximum 44M bytes and DMA function for fast memory

transfer. Six chip-select pins are equipped for direct connection

to external ROM, SRAM, Flash memory or other devices. The

maximum size for a single external memory device can be 16M

bytes.

The ST2602B has 39 I/Os grouped into 5 ports. They are

Port-C, Port-D, Port-E (7 pins), Port-F and Port-L, where the

Port-F consists of 8 open-drain output pins shared with LCD

COMs. Each I/O pins can be programmed to input or output

individually. Port-C input pins provide both pull-up and

pull-down options. The other input pins only support the pull-up

option. In the case of output mode, Port-C output pins have

open-drain type and CMOS type options; while the other ports

are fixed at CMOS type. The Port-C/D/E/F/L are shared with

other system functions. All the properties of the I/O pins are still

programmable when they are configured as other special

functional signals. This enlarges the flexibility of the usage of

the functional signals.

The ability of driving large LCD panels, up to 160x120 in BW

mode, and hardware gray-level support may enrich the display

information and the diversify the display contents as well. By

the patented sharing mechanism design of internal memory,

the LCD display function can be done without the need of

external display RAM. The variable LCD buffer design also

makes it feasible to use small internal display RAM as the

buffer of large-sized display. User may free major internal RAM

for computing or temporary access while keeping the display

content. The clock of LCD (LCDCK) is not only sourced from

main-frequency (OSC), it can also be sourced by OSCX

(32KHz crystal) to make current consumption to be minimum.

Besides, Vlcd has excellent voltage variation when Vdd

changes from 2.4V to 3.6V. Further more, ST2602B has inside

trimming fuse function for Vlcd and LVD.So every ST2602B

real-chip will have almost the same default Vlcd and LVD

voltage.

The ST2602B equips 2 serial communication ports, one UART

port and one SPI port, to perform different communications, ex.:

RS-232 and IrDA, with system components or other products

such as PC, Notebook, and popular PDA. Three clocking

outputs can produce synthesized PWM signals or high

frequency carrier for IR remote control. This helps products

become more useful in our daily life.

The built-in four-channel PSG are designed to generate key

tone, melody, voice, and speech. Two dedicated pins with large

driving capacity can drive a buzzer/speaker directly.

The ST2602B has a Low Voltage Detector (LVD) for power

management usage. The status of internal or external power

can be detected and reported to the management software.

Power bouncing during power-on is a major problem when

designing a reliable system. The ST2602B equips a Low

Voltage Reset function to keep the whole system in reset status

when power is low. After the power returns to normal level, the

system may recover its original states and keeps working

correctly.

With these integrated functions inside, the ST2602B single chip

microcontroller is a right solution for PDA, translator, databank

and other consumer products.

The block diagram of ST2602B is shown in the following figure.

ST2602B Datasheet(PDF) 2 Page - Sitronix Technology Co., Ltd.

ST2602B Datasheet(HTML) 2 Page - Sitronix Technology Co., Ltd.

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