Table of Contents
Advertisement
M16C/29 Group
Table 20.43. Flash Memory Version Electrical Characteristics (Note 1) for 100 E/W cycle products
Symbol
Erase/Write cycle (Note 3)
–
Word program time (Vcc=5.0V, Topr=25°C)
–
–
Block erase time
Time delay from Suspend Request until Erase Suspend
td(SR-ES)
–
Data retention time (Note 5)
Table 20.44. Flash Memory Version Electrical Characteristics (Note 6) for 10000 E/W cycle products (Option)
Symbol
Erase/Write cycle (Note 3, 8, 9)
–
Word program time (Vcc=5.0V, Topr=25°C)
–
–
Block erase time(Vcc=5.0V, Topr=25°C)
td(SR-ES) Time delay from Suspend Request until Erase Suspend
Note 1: When not otherwise specified, Vcc = 3.0 to5.5V; Topr = 0 to 60 °C.
Note 2: VCC = 5V; TOPR = 25 °C.
Note 3: Definition of E/W cycle: Each block may be written to a variable number of times - up to a maximum of the total
number of distinct word addresses - for every block erase. Performing multiple writes to the same address before
an erase operation is prohibited.
Note 4: Maximum number of E/W cycles for which opration is guaranteed.
Note 5: Topr = 55°C.
Note 6: When not otherwise specified, Vcc = 3.0 to 5.5V; Topr = -40 to 85°C.
Note 7: Table 20.44 applies for Block A or B E/W cycles > 1000. Otherwise, use Table 20.43.
Note 8: To reduce the number of E/W cycles, a block erase should ideally be performed after writing as many different
word addresses (only one time each) as possible. It is important to track the total number of block erases.
Note 9: Should erase error occur during block erase, attempt to execute clear status register command, then clock erase
command at least three times until erase error disappears.
Note 10: When Block A or B E/W cycles exceed 100 (Option), select one wait state per block access. When FMR17 is set
to "1", one wait state is inserted per access to Block A or B - regardless of the value of PM17. Wait state insertion
during access to all other blocks, as well as to internal RAM, is controlled by PM17 - regardless of the setting of
Erase suspend
(interrupt request)
FMR46
Rev.1.00 Nov 01,2004
REJ09B0101-0100Z
Parameter
2Kbyte block
8Kbyte block
16Kbyte block
32Kbyte block
Parameter
(2Kbyte block)
request
page 347 of 402
20. Electrical Characteristics (T-version)
Standard
Min.
Typ.
(Note 2)
100(Note 4)
75
0.2
0.4
0.7
1.2
20
[Block A and Block B (Note 7)]
Standard
Min.
Typ.
(Note 2)
10000
(Note 4,10)
100
0.3
td(SR-ES)
Unit
Max
cycle
600
µs
9
s
9
s
9
s
9
s
8
ms
year
Unit
Max
cycle
µs
s
8
ms
Advertisement
Table of Contents
