Memory circuit for e.g. flash memory, in chip card, has set of memory regions, and control unit to provide value and preset value, when user memory region exists and does not exist, respectively, during writing in target memory region

摘要

The circuit (100) has a set of memory regions (120-0 - 120-N) whose sequence depends on assigned logical addresses. A control unit (130) provides a value and a preset value, when a user memory region exists and does not exist, respectively, during writing in a target memory region. The contents of a nearest memory region and the lowest memory region are newly written and the control values of the nearest and lowest regions are changed, when the nearest region exit and does not exist, respectively, when a preset condition is fulfilled and the user region exists. Independent claims are also included for the following: (1) a method for writing in a target memory region of a memory circuit (2) a program with a program code to execute a method of writing in a target memory region, when the program is executed in a processor.