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M37735M4LXXXHP Datasheet(PDF) 5 Page - Mitsubishi Electric Semiconductor |
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M37735M4LXXXHP Datasheet(HTML) 5 Page - Mitsubishi Electric Semiconductor |
5 / 31 page 5 PRELIMINAR Y Notice: This is not a final specification. Some parametric limits are subject to change. MITSUBISHI MICROCOMPUTERS M37735M4LXXXHP SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER A-D/UART2 trans./rece. Timer B2 Timer B1 Timer B0 Timer A4 Timer A3 Timer A2 Timer A1 Timer A0 INT2 /Key input INT0 Watchdog timer DBC BRK instruction Zero divide RESET Internal peripheral devices control registers refer to Fig. 2 for detail information Interrupt vector table 00000016 00FFFF16 01000016 01FFFF16 Bank 016 Bank 116 FE000016 FEFFFF16 FF000016 FFFFFF16 Bank FF16 Bank FE16 00FFFF16 00800016 00000016 00007F16 00008016 Internal RAM 2048 bytes Internal ROM 32 Kbytes 00FFFE16 00FFD616 00007F16 00000016 UART1 transmission UART1 receive UART0 transmission UART0 receive INT1 00087F16 00FFD616 Notes 1. Internal ROM area can be modified. (Refer to the section on ROM area modification function.) 2. Banks 1016 – FF16 cannot be accessed in the 7735 group. BASIC FUNCTION BLOCKS The M37735M4LXXXHP has the same fuanctions as the M37735MHBXXXFP except for the memory allocation, the reset circuit, the ROM area modification function, and the package. Refer to the section on the M37735MHBXXXFP. MEMORY The memory map is shown in Figure 1. The address space has a capacity of 16 Mbytes and is allocated to addresses from 016 to FFFFFF16. The address space is divided by 64-Kbyte unit called bank. The banks are numbered from 016 to FF16. However, banks 1016 – FF16 of the 7735 group cannot be accessed. Built-in ROM, RAM and control registers for internal peripheral devices are assigned to bank 016. The 32-Kbyte area from addresses 800016 to FFFF16 is the built-in ROM. Addresses FFD616 to FFFF16 are the RESET and interrupt vector addresses and contain the interrupt vectors. Refer to the section on interrupts for details. The 2048-byte area allocated to addresses from 8016 to 87F16 is the built-in RAM. In addition to storing data, the RAM is used as stack during a subroutine call or interrupts. Peripheral devices such as I/O ports, A-D converter, serial I/O, timer, and interrupt control registers are allocated to addresses from 016 to 7F16. Additionally, the internal ROM area can be modified by software. Refer to the section on ROM area modification function for details. A 256-byte direct page area can be allocated anywhere in bank 016 by using the direct page register (DPR). In the direct page addressing mode, the memory in the direct page area can be accessed with two words. Hence program steps can be reduced. Fig. 1 Memory map |
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