h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 852

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 25 Electrical Characteristics
Notes: 1. Set the times according to the program/erase algorithms.
Rev. 4.00 Jun 06, 2006 page 798 of 1004
REJ09B0301-0400
2. Programming time per 128 bytes (Shows the total period for which the P-bit in the flash
3. Block erase time (shows the total period for which the E-bit in FLMCR1 is set. It does
4. Maximum programming time (tP (max))
5. Maximum programming count (N) should be set according to the actual set value of (z1,
6. Maximum erase time (tE (max))
7. Maximum erase count (N) should be set according to the actual setting (z) to allow
8. Minimum number of times for which all characteristics are guaranteed after rewriting
9. Reference value for 25 C (as a guideline, rewriting should normally function up to this
10. Data retention characteristic when rewriting is performed within the specification range,
tP (max) = (wait time after P-bit setting (z1) + (z3))
The number of times for writing n
1
7
tE (max) = waiting time after E-bit setting (z)
memory control register (FLMCR1) is set. It does not include the programming
verification time.)
not include the erase verification time.)
z2, z3) to allow programming within the maximum programming time (tP (max)). The
wait time after P-bit setting (z1, z2, z3) must be changed with the value of the number
of writing times (n) as follows.
erase within the maximum erase time (tE (max)).
(Guarantee range is 1 to minimum value).
value).
including the minimum value.
((N) – 6)
n
n
6
1000
z1 = 30 µs, z3 = 10 µs
z2 = 200 µs
Maximum erase count (N)
6 + wait time after P-bit setting (z2)