Page 309
TMP89FM42
RA003
21.2.3 RAM area switching (SYSCR3<RAREA>)
If "0xD4" is set on SYSCR4 after SYSCR3<RAREA> is set to "1" in MCU mode, RAM is mapped to the
code area. To restore the RAM area to the initial state of mapping, set SYSCR3<RAREA> to "0", and then set
"0xD4" on SYSCR4.
In serial PROM mode, RAM is mapped to the code area, irrespective of the SYSCR3<RAREA> setting.
21.2.4 BOOTROM area switching (FLSCR1<BAREA>)
If "0xD5" is set on FLSCR2<CR1EN> after FLSCR1<BAREA> is set to "1" in MCU mode, 0x1000 through
0x17FF in the code and data areas is masked by flash memory, and 2K-byte (first half of 4KB) BOOTROM is
mapped. If you do not want to map BOOTROM, set "0xD5" on FLSCR2<CR1EN> after setting
FLSCR1<BAREA> to "0".
A set of codes for programming flash memory in serial PROM mode are built into BOOTROM, and a sup-
port program (API) for performing an erase or write on flash memory in a simple manner is also built into one
part in the BOOTROM area. Therefore, by calling a subroutine in the support program after BOOTROM is
mapped, it is possible to erase, write and read flash memory easily.
In serial PROM mode, BOOTROM is mapped to 0x1000 through 0x17FF in the data area and 0x1000
through 0x1FFF in the code area, irrespective of the FLSCR1<BAREA> setting. BAREA is always "1", and
the set BAREA value remains unchanged, even if data is written. "1" is always read from BAREA.
Summary of Contents for TLCS-870/C1 Series
Page 1: ...8 Bit Microcontroller TLCS 870 C1 Series TMP89FM42 查询TMP89FM42供应商 捷多邦 专业PCB打样工厂 24小时加急出货 ...
Page 3: ...Revision History Date Revision 2007 10 25 1 First Release 2007 11 3 2 Contents Revised ...
Page 4: ......
Page 14: ......
Page 18: ...1 3 Block Diagram TMP89FM42 1 3 Block Diagram Figure 1 2 Block Diagram ...
Page 22: ...1 4 Pin Names and Functions TMP89FM42 ...
Page 60: ...2 CPU Core 2 5 Revision History TMP89FM42 ...
Page 76: ...3 Interrupt Control Circuit 3 8 Revision History TMP89FM42 ...
Page 86: ...4 External Interrupt control circuit 4 3 Function TMP89FM42 ...
Page 102: ...7 Voltage Detection Circuit 7 5 Revision History TMP89FM42 ...
Page 126: ...8 I O Ports 8 3 I O Port Registers TMP89FM42 Note 2 i 0 to 1 ...
Page 136: ...8 I O Ports 8 5 Revision History TMP89FM42 ...
Page 142: ...9 Special Function Registers 9 3 SFR3 0x0E40 to 0x0EFF TMP89FM42 ...
Page 146: ...10 Low Power Consumption Function for Peripherals TMP89FM42 ...
Page 149: ...TMP89FM42 11 3 Revision History Rev Description RA001 Deleted SLEEP2 description ...
Page 150: ...11 Divider Output DVO 11 3 Revision History TMP89FM42 ...
Page 220: ...15 Real Time Clock RTC 15 4 Real Time Clock Operation TMP89FM42 ...
Page 250: ...16 Asynchronous Serial Interface UART 16 15 Revision History TMP89FM42 ...
Page 302: ...18 Serial Bus Interface SBI 18 7 Revision History TMP89FM42 ...
Page 338: ...21 Flash Memory 21 4 Toggle Bit D6 TMP89FM42 ...
Page 384: ...22 Serial PROM Mode 22 15 Revision History TMP89FM42 ...
Page 388: ...24 Input Output Circuit 24 1 Control Pins TMP89FM42 ...
Page 404: ...25 Electrical Characteristics 25 11 Revision History TMP89FM42 ...
Page 406: ...26 Package Dimensions TMP89FM42 ...
Page 408: ......