C511 datasheet(101/128 Pages) SIEMENS

101 / 128 page

Semiconductor Group

9-1

EEPROM Programming Interface

SAB-C513A-H

EEPROM Programming Interface of the SAB-C513A-H

The SAB-C513A-H is the EEPROM MCU version in the SAB-C511/513 microcontroller family.

Except the type of program memory, its functionality is equal to the SAB-C513A functionality.

Therefore, the SAB-C513A-H can be used in a prototype system design as a replacement for all

SAB-C511/513 family ROM-based microcontrollers.

This chapter describes in detail how the SAB-C513A-H is handled in the programmimg mode.

9.1

Programming Configuration

During normal program execution the SAB-C513A-H behaves like the SAB-C513A. For

programming of the device, the SAB-C513A-H must be put into a programming mode. This typically

is done not in-system but in a special programming hardware. In the programming mode the

SAB-C513A-H operates as a typical peripheral device which allows the user to access it with its

specific control and data registers.

In the programming mode the programming interface is accessed via a multiplexed address data

bus (port 0) and via control lines at port 3. All other units of the microcontroller (CPU, timers, serial

interfaces etc.) except the clock generator are disabled in the programming mode. The clock is

needed for the operation of the charge pump which generates on-chip the necessary programming

voltage for the EEPROM.

Figure 9-9-1 shows the pins of the SAB-C513A-H which are required to control the device in the

programming mode. Figure 9-9-2 shows the detailed pin configuration of the SAB-C513A-H.

Figure 9-1

SAB-C513A-H Logic Symbol in Programming Mode

C511 Datasheet(PDF) 101 Page - Siemens Semiconductor Group