Datasheet

Table Of Contents
Section 24 Electrical Characteristics (H8S/2215)
REJ09B0140-0900 Rev. 9.00 Page 751 of 846
Sep 16, 2010
H8S/2215 Group
4. Maximum programming time value
t
p
(max.) = Wait time after P1 bit set (z) × maximum programming count (N1 + N2)
= (Z0 + Z2) × 6 + Z1 × 994
5. Maximum erasure time value
t
E
(max.) = Wait time after E1 bit set (z) × maximum erasure count (N)
6. Minimum number of times for which all characteristics are guaranteed after rewriting
(Guarantee range is 1 to minimum value).
7. Reference value for 25°C (as a guideline, rewriting should normally function up to this
value).
8. Data retention characteristic when rewriting is performed within the specification range,
including the minimum value.
24.9 Usage Note
General Notice during Design for Printed Circuit Board: Measures for radiation noise caused
by the transient current in this LSI should be taken into consideration. The examples of the
measures are shown below.
To use a multilayer printed circuit board which includes layers for Vcc and GND.
To mount by-pass capacitors (approximately 0.1 μF) between the Vcc and GND (Vss) pins,
and the PLLV
CC
and PLLGND pins, of this LSI.