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CHAPTER 1 OVERVIEW
1.2 MB89950/950A Series Product Range
The MB89950/950A series contains 4 different models. Table 1.2-1 "MB89950/950A
series product line-up" lists the product range and Table 1.2-2 "Common specifications
for the MB89950/950A series" lists the common specifications.
■ MB89950/950A series product range
Table 1.2-1 MB89950/950A series product line-up
Part number
MB89951A MB89953A MB89P955
MB89PV950
*2
Classification Mask ROM OTP Piggy-back
ROM size 4K x 8 bits
(internal mask ROM)
8K x 8 bits
(internal mask ROM)
16K x 8 bits
(internal OTP)
32K x 8 bits
(external ROM)
RAM size 128 x 8 bits 256 x 8 bits 512 x 8 bits 1024 x 8 bits
Low-power consumption
(Standby mode)
Sleep mode and stop mode
Process CMOS
Operating voltage
*1
2.7 V to 5.5 V 2.7 V to 6.0 V
*1: Varies with conditions such as operating frequencies.
*2: Use MBM27C256A as the external ROM