MB89550A Series
5
I
DIFFERENCES AMONG PRODUCTS AND PRECAUTIONS FOR MODEL SELECTION
Package and Model Combinations
Note : Compatible with all options (-201/202/203) .
Memory Space
When evaluating chips using piggyback evaluators etc., please take note of the differences among products
before making the evaluation.
Current Consumption
When operating at low speed, one-time PROM and EPROM products will consume more current than mask
ROM products. However, the current consumption in sleep/stop modes is the same.
For specific details about each package, see "
I
PACKAGE DIMENSIONS".
For details about power consumption, see "
I
ELECTRICAL CHARACTERISTICS" .
Mask Options
The available options, and methods of using options, differ according to the model. Be sure to confirm the
options from the "
I
MASK OPTIONS" section.
LCD Drive Step-up Power Circuit
The MB89550A series is available with or without the step-up circuit option as a mask option.
Power Supply Path
The models in the MB89550A series have two power supply pins, V
CC1
and V
CC2
, with power supply paths that
differ according to the model.
Models
Supply pin
Oscillator Startup and Power-on Reset
On the MB89PV550A and MB89P558A, oscillator startup and power-on reset are applied at the rise of the V
CC2
input. On the MB89558A and MB89557A, oscillator startup and power-on reset are applied at the rise of the
V
CC1
input.
Models
Package
MB89PV550A
MB89P558A
MB89557A
MB89558A
FPT-100P-M05
(LQFP-100 0.5 mm pitch)
×
FPT-100P-M18
(TQFP-100 0.4 mm pitch)
×
MQP-100C-P02
(MQFP-100 0.5 mm pitch)
×
×
Power supply path
MB89557A/
558A
V
CC1
3V power supply pin for internal resource operation, including the CPU.
V
CC2
5V power supply pin for input/output ports.
MB89P558A
V
CC1
V
PP
pin for on-board writing.
V
CC2
V power supply pin for internal resource operation, including the CPU, and for input/
output pins.
MB89PV550A
V
CC1
Internally shut off, operates as input to V
CC2
only.
V
CC2
5V power supply pin for internal resource operation, including the CPU, and for input/
output pins.