M37542F8FP Renesas Electronics America, M37542F8FP Datasheet - Page 75

• Manufacturer Part Number: M37542F8FP
• Description: IC 740 MCU FLASH 32K 36SSOP
• Manufacturer: Renesas Electronics America
• Series: 740/38000r

Specifications of M37542F8FP

• Core Processor: 740
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SIO, UART/USART
• Peripherals: POR, WDT
• Number Of I /o: 29
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 36-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

7542 Group
FLASH MEMORY MODE
The 7542 group’s flash memory version has the flash memory that
can be rewritten with a single power source.
For this flash memory, three flash memory modes are available in
which to read, program, and erase: the parallel I/O and standard
serial I/O modes in which the flash memory can be manipulated
using a programmer and the CPU rewrite mode in which the flash
memory can be manipulated by the Central Processing Unit
(CPU).
Table 9 lists the summary of the 7542 Group (flash memory ver-
sion).
Table 9 Summary of 7542 group’s flash memory version
Note: The Boot ROM area has had a standard serial I/O mode control program stored in it when shipped from the factory.
Rev.3.03
REJ03B0006-0303
Power source voltage (Vcc)
Temperature at program/erase
Program/Erase V
Flash memory mode
Erase block division
Program method
Erase method
Program/Erase control method
Number of commands
Number of program/Erase times
ROM code protection
Summary
This Boot ROM area can be erased and written in only parallel I/O mode.
Jul 11, 2008
PP
voltage (V
Item
User ROM area/Data ROM area
Boot ROM area (Note)
Page 73 of 117
PP
)
V
Ta = 0 to 60 °C
V
3 modes; Parallel I/O mode, Standard serial I/O mode, CPU rewrite mode
Refer to Fig. 97.
Not divided (4K bytes)
In units of bytes
Block erase
Program/Erase control by software command
5 commands
100
Available in parallel I/O mode and standard serial I/O mode
CC
CC
= 2.7 to 5.5 V
= 2.7 to 5.5 V
This flash memory version has some blocks on the flash memory
as shown in Figure 97 and each block can be erased.
In addition to the ordinary User ROM area to store the MCU op-
eration control program, the flash memory has a Boot ROM area
that is used to store a program to control rewriting in CPU rewrite
and standard serial I/O modes. This Boot ROM area has had a
standard serial I/O mode control program stored in it when
shipped from the factory. However, the user can write a rewrite
control program in this area that suits the user’s application sys-
tem. This Boot ROM area can be rewritten in only parallel I/O
mode.
Specifications