HD64F2357F20V Datasheet, PDF (797/1049 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-chip Microcomputer H8S Family / H8S/2300 Series

Item
Symbol Min Typ Max Unit
Test
Condition
Programming Wait time after SWE bit
x
setting*¹
10 — — µs
Wait time after PSU bit
y
setting*¹
50 — — µs
Wait time after P bit
setting*¹*⁴
z
150 — 200 µs
Wait time after P bit clear*¹ α
10 — — µs
Wait time after PSU bit
β
clear*¹
10 — — µs
Wait time after PV bit
γ
4 — — µs
setting*¹
Wait time after H'FF dummy ε
write*¹
2 — — µs
Wait time after PV bit clear*¹ η
4 — — µs
Maximum programming N
count*¹*⁴
— — 1000 Times
*⁵
Z = 200 µs
Erase
Wait time after SWE bit x
setting*¹
10 — — µs
Wait time after ESU bit
y
setting*¹
200 — — µs
Wait time after E bit
setting*¹*⁶
z
5 — 10 ms
Wait time after E bit clear*¹ α
10 — — µs
Wait time after ESU bit
β
clear*¹
10 — — µs
Wait time after EV bit
γ
setting*¹
20 — — µs
Wait time after H'FF dummy ε
write*¹
2 — — µs
Wait time after EV bit clear*¹Î·
5 — — µs
Maximum erase count*¹*⁶ N
120 — 240 Times
Notes: 1. Set the times according to the program/erase algorithms.
2. Programming time per 32 bytes (Shows the total time the flash memory control register (FLMCR) is set. It does
not include the programming verification time.)
3. Block erase time (Shows the period the E bit in FLMCR is set. It does not include the erase verification time.)
4. Maximum programming time
(t_p (max)=wait time after P-bit setting (Z) × maximum programming count (N))
5. Number of times when the wait time after P bit setting (z) = 200 µs.
The maximum number of writes (N) should be set according to the actual set value of z so as not to exceed the
maximum programming time (t_P(max)).
6. For the maximum erase time (t_E(max)), the following relationship applies between the wait time after E bit setting
(z) and the maximum number of erases (N):
t_E(max) = Wait time after E bit setting (z) × maximum number of erases (N)
The values of z and N should be set so as to satisfy the above formula.
Examples: When z = 5 [ms], N = 240 times
When z = 10 [ms], N = 120 times
Rev.6.00 Oct.28.2004 page 767 of 1016
REJ09B0138-0600H