Philips CEM2100/00 Service Manual page 393

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 0.1µF near the power supply of the
device to stabilize its operation.
Note 9: V is supply volage to the terminals except for TEST pin. V
IN
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.
Program coutner (PC)
I
DDP-P
[mA]
Figure 22-1 Intermittent Operation of Flash Memory
Program counter (PC)
Internal data bus
Internal write signal
I
DDEW
Figure 22-2 Current When an Erase or Program is Being Performed on the Flash Memory
1 machine cycle (4/fc or 4/fs)
n n+1 n+2
1 machine cycle
Last write cycle of each of the Byte Program,
Security Program, Chip Erase and Sector Erase
[mA]
Page 271
: is supply voltage for TEST pin.
TEST
n+3
Momentary flash current
Max. current
Typ. current
MCU current
T , T
BD SCE
T5CL8
Sum of average
momentary flash current
and MCU current