HD64F3437TFI16V Renesas Electronics America, HD64F3437TFI16V Datasheet - Page 432

• Manufacturer Part Number: HD64F3437TFI16V
• Description: MCU FLASH 60K 100-TQFP
• Manufacturer: Renesas Electronics America

Specifications of HD64F3437TFI16V

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Prewrite Flowchart
400
(set bit of block to be programmed to 1)
(clear bit of programmed block to 0)
write address and write data)
Write H'00 to flash memory
Clear erase block register
Enable watchdog timer
Set erase block register
(Flash memory latches
Disable watchdog timer
Select program mode
( P bit = 1 in FLMCR)
(read data = H'00?)
Set start address
Prewrite verify
Wait (t
Last address?
End of prewrite
Wait (x) s
OK
Clear P bit
n = 1
Start
VS
1) s
Yes
*4
*4
*3
*5
*5
*2
*1
Figure 19.10 Prewrite Flowchart
No go
No
End of programming
Programming error
Notes: *1 Use a byte transfer instruction.
Yes
n
*2 Set the timer overflow interval to the
*3 In prewrite-verify mode P, E, PV,
*4 x:
*5 Start and last addresses shall be top
N?
shortest value (CKS2, CKS1, CKS0
all cleared to 0).
and EV are all cleared to 0 and 12 V
is applied to FV
with a byte transfer instruction.
t
N:
and last addresses of the block to be
erased.
*4
VS
1: 4 s or more
10 to 20 s
50 (set N so that total
exceed 1 ms)
programming time does not
No
PP
n + 1
. Read the data
Address + 1
n
address