Time for programming one page of data from external tester to the buffer memory in double buffer approach (see Figure 4) equals to: tB + T2 + C = 2830/2048 = 1.38(ms), where:
And T2 = 1.38 − tB − C = 0.65 − C(ms). In order to calculate the C = 0.65 − T2 let us subtract time to program one buffer into flash for these two approaches: