TMPA901CMXBG Toshiba, TMPA901CMXBG Datasheet - Page 63

• Manufacturer Part Number: TMPA901CMXBG
• Description: Microcontrollers (MCU) 32-bit RISC MCU 16kb ARM926EJ 16kb 200Mhz
• Manufacturer: Toshiba

Specifications of TMPA901CMXBG

• Product Summaries: Summary
• Lead Free: Yes
• Rohs Compatible Product(s): Available
• Rom (kbytes): -
• Rom Type: ROMless
• Ram (kbytes): 32
• Number Of Pins: 177
• Package: BGA
• Vcc: 3V
• Tft Lcd Controller: Y
• Touchscreen Controller: Y
• Usb Host Fs With Phy: Y
• Usb Device Hs With Phy: Y
• Sd Host Controller: -
• Cmos Image Sensor Interface: -
• I2s: 1
• Ssp (ch) Spi: 1
• I2mc/sio (ch): 1
• Uart/sio (ch): 2
• External Bus Interface: Y
• Cs/wait Controller (ch): 4
• Dma Controller: 8
• 10-bit Ad Converter: 4
• 12-bit Da Converter: -
• 16-bit Timer / Counter: 6
• Real Time Clock: Y
• Watchdog Timer: Y
• Osc Freq Detect: Y
• Low-power Modes: Y
• Lead Free Status / Rohs Status: Details

3.6
3.6.1
Boot ROM
TMPA901CM contains a boot ROM for loading a user program to the internal RAM.
The following loading methods are supported.
Priority
TMPA901CM has two operation modes: external memory mode and internal boot ROM
mode. Either mode is selected in accordance with the AM1 and AM0 pin status when
RESETn is asserted.
RESETn
Operation Modes
1
(1) External memory mode: After reset, the CPU fetches instructions from external
(2) Internal boot ROM mode: After reset, the CPU fetches instructions from the
Mode Setting Pins
AM1
such as a PC
0
1
1
0
USB host
Source
AM0
Table 3.6.2 Overview of boot operation
1
0
1
0
internal boot ROM and executes them. According to the program in
the internal boot ROM, a user program is transferred to the internal
RAM via USB communication and branches into the program in the
internal RAM.
This triggers the user program to boot.
Table 3.6.2 shows the overview of boot operation.
Table 3.6.1 Operation Modes
Start from the external bus memory (with 16-bit bus)
Start from the external bus memory (with 32-bit bus)
BOOT (start from the internal boot ROM)
TEST (setting prohibited)
TMPA901CM- 62
Loading
memory and executes them.
USB
I/F
Operation Mode
Destination
Internal RAM
internal 8 KB_RAM
Operation after
Branch into the
0x0000_0000
loading
TMPA901CM
2010-07-29