TMP86FS49BUG datasheet(287/294 Pages) TOSHIBA

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Page 271

TMP86FS49BUG

Note 8: The circuit of a power supply must be designed such as to enable the supply of a peak current. This peak current causes

the supply voltage in the device to fluctuate. Connect a bypass capacitor of about 0.1

µF near the power supply of the

device to stabilize its operation.

Note 9: VIN is supply volage to the terminals except for TEST pin. VTEST: is supply voltage for TEST pin.

Note 10:To execute the Program, Erase and Security Program commands on the flash memory, the temperature must be kept

within Topr = -10 to 40 degree celsius. If this temperature range is not observed, operation cannot be guaranteed.

Figure 22-1 Intermittent Operation of Flash Memory

Figure 22-2 Current When an Erase or Program is Being Performed on the Flash Memory

Program coutner (PC)

n+1

n+2

n+3

1 machine cycle (4/fc or 4/fs)

MCU current

[mA]

DDP-P

Typ. current

Momentary flash current

Max. current

Sum of average

momentary flash current

and MCU current

Internal write signal

TBD, TSCE

Last write cycle of each of the Byte Program,

Security Program, Chip Erase and Sector Erase

[mA]

DDEW

Internal data bus

Program counter (PC)

1 machine cycle

TMP86FS49BUG Datasheet(PDF) 287 Page - Toshiba Semiconductor