TMS370 datasheet(14/73 Pages) TI

14 / 73 page

TMS370Cx6x

8-BIT MICROCONTROLLER

SPNS033C – SEPTEMBER 1995 – REVISED FEBRUARY 1997

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251–1443

data EEPROM (continued)

–

Internal charge pump circuitry. No external EEPROM programming voltage supply is needed.

–

Control register: Data EEPROM programming is controlled by the data EEPROM control register

(DEECTL) located in the PF frame beginning at location P01A.

–

In-circuit programming capability: There is no need to remove the device to program it.

D Write-protection: Writes to the data EEPROM are disabled during the following conditions:

–

Reset: All programming of the data EEPROM module is halted.

–

Write protection active: there is one write-protect bit per 32-byte EEPROM block.

–

Low-power mode operation

D Write protection can be overridden by applying 12 V to MC.

Table 7 shows the memory map of the control registers.

Table 7. Data EEPROM and Program EPROM Control Registers Memory Map

ADDRESS

SYMBOL

NAME†

P014

EPCTLH

Program EPROM control register – high array

P015 – P016

Reserved

P017

INT1

External interrupt 1 control register

P018

INT2

External interrupt 2 control register

P019

INT3

External interrupt 3 control register

P01A

DEECTL

Data EEPROM control register

P01B

Reserved

P01C

EPCTLM

Program EPROM control register – middle array

P01D

Reserved

P01E

EPCTLL

Program EPROM control register – low array

† For the 24K- and 32K-byte EPROM device, the program memory is controlled by P01C and P01E; for the 48K-byte EPROM device, the program

memory is controlled by P014, P01C, and P01E.

program EPROM

The ‘370C767 program EPROM consists of 24K bytes that are made up of one 16K-byte array and one 8K-byte

array of EPROM; the 16K-byte array is located at address locations 2000h through 5FFFh, and the 8K-byte

array is located at address locations 6000h through 7FFFh. The ‘370C768 program EPROM consists of 32K

bytes that are made up of two 16K-byte arrays of EPROM; the first 16K-byte array is located at address locations

2000h through 5FFFh, and the second 16K-byte array is located at address locations 6000h through 9FFFh.

The ’370C769 program EPROM consists of 48K bytes that are made up of three 16K-byte arrays of EPROM;

the first 16K-byte array is located at address locations 2000h through 5FFFh, the second 16K-byte array is

located at address locations 6000h through 9FFFh, the third 16K-byte array is located at address locations

A000h through DFFFh as shown in Table 8.

TMS370 Datasheet(PDF) 14 Page - Texas Instruments

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