TMP92CF30
2009-06-12
92CF30-189
3.10 SDRAM Controller (SDRAMC)
The TMP92CF30 incorporates an SDRAM controller (SDRAMC) for accessing SDRAM that can
be used as data memory, program memory, or display memory.
The SDRAMC has the following features:
(1)
Supported SDRAM
Data rate type
: SDR (single data rate) type only
Memory capacity : 16 / 64 / 128 / 256 / 512 Mbits
Number of banks : 2 banks / 4 banks
Data bus width
: 16 bits
(This device support 32-bit data bus mode, but the accessing to SDRAM
is 16-bit mode only.)
Read burst length : 1 word / full page
Write mode
: Single mode / Burst mode
(2)
Supported initialization sequence commands
Precharge All command
Eight Auto Refresh commands
Mode Register Set command
(3)
Access mode
CPU
Cycle
HDMA
Cycle
Burst length
1 word
1 word or full page selectable
Addressing mode
Sequential
Sequential
CAS latency (clock)
2
2
Write mode
Single
Single or burst selectable
(4)
Access cycles
•
CPU access cycles
Read cycle
: 1 word, 4-3-3-3 states (minimum)
Write cycle
: Single, 3-2-2-2 states (minimum)
Data size
: 1 byte / 1 word / 1 long-word
•
HDMA access cycles
Read cycle
: 1 word, 4-3-3-3 states / full page, 4-1-1-1 states (minimum)
Write cycle
: Single, 3-2-2-2 states (minimum) / burst, 2-1-1-1 states (minimum)
Data size
: 1 byte / 1 word / 1 long-word
(5)
Auto generation of refresh cycles
•
Auto Refresh is performed while the SDRAM is not being accessed.
•
The Auto Refresh interval is programmable.
•
The Self Refresh function is also supported.
Note: The SDRAM address area is determined by the CS1 or CS2 setting of the memory controller. However, the
number of bus cycle states is controlled by the SDRAMC.
Содержание TLCS-900/H1 Series
Страница 1: ...TOSHIBA Original CMOS 32 Bit Microcontroller TLCS 900 H1 Series TMP92CF30FG Semiconductor Company ...
Страница 650: ...TMP92CF30 2009 06 12 92CF30 648 7 Package Dimensions LQFP176 P 2020 0 40F TOP VIEW BOTTOM VIEW Detail view of A 25 1 A ...
Страница 652: ...TMP92CF30 2009 06 12 92CF30 650 ...