tmp89fm82 TOSHIBA Semiconductor CORPORATION, tmp89fm82 Datasheet - Page 442

• Manufacturer Part Number: tmp89fm82
• Description: 8 Bit Microcontroller Tlcs-870/c1 Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

25.3
DC Characteristics
RA000
Figure 25-5 Current When an Erase or Write is Being Performed on the Flash Memory
Note 6: Each supply current in SLOW2 mode is equivalent to that in IDLE0, IDLE1 and IDLE2 modes.
Note 7: When a program operates in the flash memory or when data is being read from the flash memory, the flash memory
Note 8: If a write or erase is performed on the flash memory or a security program is enabled in the flash memory, an instantaneous
Note 9: The circuit of a power supply must be designed such as to enable the supply of a peak current. This peak current causes
Program counter (PC)
operates intermittently, and a peak current flows, as shown in Figure 25-4. In this case, the supply current I
MAL1, NORMAL2 and SLOW1 modes) is defined as the sum of the average peak current and MCU current.
peak current flows, as shown in Figure 25-5.
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.
Program counter (PC)
I
DDP-P
I
[mA]
DDEW
Internal write signal
Figure 25-4 Intermittent Operation of Flash Memory
Internal data bus
1 machine cycle
[mA]
n
Security Program, Chip Erase and Sector Erase
Last write cycle of each of the Byte Program,
n+1
1 machine cycle
n+2
Page 426
n+3
Momentary flash current
Maximum current
Typical current
MCU current
T
BD
, T
SCE
Sum of average
momentary flash
current and
MCU current
TMP89FM82
DD
(in NOR-