M37542F8FP#W4 Renesas Electronics America, M37542F8FP#W4 Datasheet - Page 19

• Manufacturer Part Number: M37542F8FP#W4
• Description: IC 740 MCU FLASH 32K 36-SSOP
• Manufacturer: Renesas Electronics America
• Series: 740/38000r

Specifications of M37542F8FP#W4

• 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: Lead free / RoHS Compliant
• Eeprom Size: -

Memory
Special function register (SFR) area
The SFR area in the zero page contains control registers such as
I/O ports and timers.
RAM
RAM is used for data storage and for a stack area of subroutine
calls and interrupts.
ROM
The first 128 bytes and the last 2 bytes of ROM are reserved for
device testing and the rest is a user area for storing programs.
The reserved ROM area can program/erase in the flash memory
version.
Interrupt vector area
The interrupt vector area contains reset and interrupt vectors.
Fig. 15 Memory map diagram
7542 Group
Rev.3.03
REJ03B0006-0303
ROM area
ROM capacity
16384
32768
(bytes)
Jul 11, 2008
8192
RAM area
RAM capacity
E000
C000
8000
address
YYYY
(bytes)
1024
384
512
16
Page 17 of 117
16
16
16
Notes 1: Only flash memory version has this SFR area.
XXXX
01BF
023F
043F
E080
C080
8080
address
address
ZZZZ
16
16
16
16
2: The reserved ROM area can program/erase in the flash memory version.
16
16
16
16
Note the difference of the mask version.
RAM
ROM
Zero page
The 256 bytes from addresses 0000
zero page area. The internal RAM and the special function regis-
ters (SFR) are allocated to this area.
The zero page addressing mode can be used to specify memory
and register addresses in the zero page area. Access to this area
with only 2 bytes is possible in the zero page addressing mode.
Special page
The 256 bytes from addresses FF00
special page area. The special page addressing mode can be
used to specify memory addresses in the special page area. Ac-
cess to this area with only 2 bytes is possible in the special page
addressing mode.
XXXX
YYYY
FFDC
FFFE
0FE0
0FFF
ZZZZ
FFFF
FF00
0000
0040
0100
0440
16
16
16
16
16
16
16
16
16
16
16
16
16
Reserved ROM area
Reserved ROM area
Interrupt vector area
SFR area (Note 1)
Reserved area
SFR area
(128 bytes)
Not used
Not used
16
16
Zero page
to 00FF
to FFFF
Special page
16
16
are called the
are called the