M37544G2AGP#U0 Renesas Electronics America, M37544G2AGP#U0 Datasheet - Page 15

• Manufacturer Part Number: M37544G2AGP#U0
• Description: IC 740 MCU OTP 8K 32LQFP
• Manufacturer: Renesas Electronics America
• Series: 740/38000r

Specifications of M37544G2AGP#U0

• Core Processor: 740
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SIO, UART/USART
• Peripherals: WDT
• Number Of I /o: 25
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: QzROM
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 6x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 32-LQFP
• 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.
ROM Code Protect Address (address FFD4
Address FFD4
the ROM code protect address. “00
when selecting the protect bit write by using a serial programmer
or selecting protect enabled for writing shipment by Renesas
Technology corp.. When “00
dress, the protect function is enabled, so that reading or writing
from/to QzROM is disabled by a serial programmer.
As for the QzROM product in blank, the ROM code is protected by se-
lecting the protect bit write at ROM writing with a serial programmer.
As for the QzROM product shipped after writing, “00
enabled) or “FF
protect address when Renesas Technology corp. performs writing.
The writing of “00
ferred to as “Mask option setup” in MM) when ordering.
REJ03B0108-0103
page 13 of 72
7544 Group (QzROM version)
Fig. 11 Memory map diagram
16
16
, which is the reserved ROM area of QzROM, is
” (protect disabled) is written into the ROM code
16
” or “FF
FFD4
Address
Function set ROM area
Rev.1.03
16
16
16
” is set to the ROM code protect ad-
” can be selected as the ROM (re-
ROM code protect
16
Mar 31, 2009
” is written into this address
16
)
(8192 bytes)
(256 bytes)
16
RAM
ROM
” (protect
FFD4
FFD5
FFFE
FFFF
E080
013F
E000
FF00
0000
0040
0100
0440
16
16
16
16
16
16
16
16
16
16
16
16
Interrupt vector area
The interrupt vector area contains reset and interrupt vectors.
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.
The content of RAM is undefined when the microcomputer is re-
set. The initial values must be surely set before you use it.
Note on use
Function set ROM area
Reserved ROM area
Reserved ROM area
Interrupt vector area
Reserved area
SFR area
(128 bytes)
Disable
Zero page
Special page
16
16
to 00FF
to FFFF
16
16
are called the
are called the