D64F3437TFLH16V Renesas Electronics America, D64F3437TFLH16V Datasheet - Page 506
D64F3437TFLH16V
Manufacturer Part Number
D64F3437TFLH16V
Description
MCU 5V 60K PB-FREE 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300r
Datasheet
1.HD64F3437STF16V.pdf
(755 pages)
Specifications of D64F3437TFLH16V
Core Processor
H8/300
Core Size
8-Bit
Speed
16MHz
Connectivity
Host Interface, I²C, SCI
Peripherals
POR, PWM, WDT
Number Of I /o
74
Program Memory Size
60KB (60K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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D64F3437TFLH16V
Manufacturer:
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20.4.7
Prewrite-verify mode is a verify mode used when programming all bits to equalize their threshold
voltages before erasing them.
To program all bits, follow the prewrite algorithm shown in figure 20.10. The procedure is to
program all flash memory data to H'00 by using H'00 write data. H'00 should also be written when
using RAM for flash memory emulation (when prewriting a RAM area). (This also applies when
using RAM to emulate flash memory erasing with an emulator or other support tool.) After the
necessary programming time has elapsed, exit program mode (by clearing the P bit to 0) and select
prewrite-verify mode (leave the P, E, PV, and EV bits all cleared to 0). In prewrite-verify mode, a
prewrite-verify voltage is applied to the memory cells at the read address. If the flash memory is
read in this state, the data at the read address will be read. After selecting prewrite-verify mode,
wait 4 s or more before reading.
Note: For a sample prewriting program, see the prewrite subroutine in the sample erasing
20.4.8
Flash memory can be protected from programming and erasing by software or hardware methods.
These two protection modes are described below.
Software Protection: Prevents transitions to program mode and erase mode even if the P or E bit
is set in the flash memory control register (FLMCR). Details are as follows.
Protection
Block
protect
Emulation
protect
Notes: *1 Three modes: program-verify, erase-verify, and prewrite-verify.
474
*2
program.
*2 Except in RAM areas overlapped onto flash memory.
*3 All blocks are erase-disabled. It is not possible to specify individual blocks.
Prewrite Verify Mode
Protect Modes
Description
Individual blocks can be protected from erasing
and programming by the erase block registers
(EBR1 and EBR2). If H'00 is set in EBR1 and
EBR2, all blocks are protected from erasing and
programming.
When the RAMS or RAM0 bit, but not both,
is set in the wait-state control register (WSCR),
all blocks are protected from programming and
erasing
Program
Disabled
Disabled
Function
Erase
Disabled
Disabled
*3
Verify
Enabled
Enabled
*1
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