MAXQ7665BATM+ Maxim Integrated Products, MAXQ7665BATM+ Datasheet - Page 32

• Manufacturer Part Number: MAXQ7665BATM+
• Description: IC MCU-BASED DAS 16BIT 48-TQFN
• Manufacturer: Maxim Integrated Products
• Series: MAXQ™r

Specifications of MAXQ7665BATM+

• Core Processor: RISC
• Core Size: 16-Bit
• Speed: 8MHz
• Connectivity: CAN, LIN, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 8
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Ram Size: 256 x 16
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.25 V
• Data Converters: A/D 8x12b, D/A 1x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 48-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

16-Bit RISC Microcontroller-Based
Smart Data-Acquisition Systems
A pseudo-Von Neumann memory map can also be
enabled. This places the utility ROM, code, and data
memory into a single contiguous memory map. This is
useful for applications that require dynamic program
modification or unique memory configurations.
A 16-bit-wide x 16 deep internal hardware stack pro-
vides storage for program return addresses and gener-
al-purpose use. The stack is used automatically by the
processor when the CALL, RET, and RETI instructions
are executed and interrupts serviced. The stack can
also be used explicitly to store and retrieve data by
using the PUSH, POP, and POPI instructions.
On reset, the stack pointer, SP, initializes to the top of the
stack (0Fh). The CALL, PUSH, and interrupt-vectoring
Figure 14. MAXQ7665B Memory Map
32
_______________________________________________________________________________________
PROGRAM FLASH
OR MASKED ROM
UTILITY ROM
PROGRAM
DATA SRAM
(32K x 16)
256 x 16
4K x 16
SPACE
64KB
Stack Memory
A0FFh
A000h
7FFFh
8FFFh
8000h
0000h
(BYTE MODE)
DATA SPACE
UTILITY ROM
DATA SRAM
512 x 8
8K x 8
operations increment SP, then store a value at the location
pointed to by SP. The RET, RETI, POP, and POPI opera-
tions retrieve the value at SP and then decrement SP.
The utility ROM is an 8KB (4K x 16) block of internal
ROM memory that defaults to a starting address of
8000h. The utility ROM consists of subroutines that can
be called from application software. These include:
• In-system programming (bootstrap loader) over JTAG
• In-circuit debug routines
• User-callable routines for in-application flash pro-
gramming and fast table lookup
9FFFh
01FFh
8000h
0000h
(WORD MODE)
DATA SPACE
UTILITY ROM
DATA SRAM
4K x 16
256 x 16
8FFFh
8000h
00FFh
0000h
Utility ROM