參數(shù)資料
型號: M37902FCCHP
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, 26 MHz, MICROCONTROLLER, PQFP100
封裝: 14 X 14 MM, 0.50 MM PITCH, PLASTIC, LQFP-100
文件頁數(shù): 63/143頁
文件大?。?/td> 1148K
代理商: M37902FCCHP
M37902FCCHP, M37902FGCHP, M37902FJCHP
MITSUBISHI MICROCOMPUTERS
26
SHINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Fig. 18 Bus cycle types at access to external area
1 0
0 1
0 0
Bus cycle select bit 1 = 0
Bus cycle
select bit 0
RD
BLW,BHW
RD
BLW,BHW
φ1
External address
bus
External data bus
CSi
RD
BLW,BHW
ALE
Address
1 bus cycle = 2
φ
φ1
External address
bus
External data bus
CSi
ALE
Address
1 bus cycle = 3
φ
φ1
External address
bus
External data bus
CSi
ALE
Address
1 bus cycle = 4
φ
φ1
External address
bus
External data bus
CSi
ALE
Address
1 bus cycle = 4
φ
Data
RD
BLW,BHW
1 1
Bus cycle select bit 1 = 1
RD
BLW,BHW
1 bus cycle = 5
φ
φ1
External address
bus
External data bus
CSi
ALE
Address
3
φ
RD
BLW,BHW
1 bus cycle = 6
φ
φ1
External address
bus
External data bus
CSi
ALE
Address
4
φ
2
φ
2
φ
RD
BLW,BHW
1 bus cycle = 6
φ
φ1
External address
bus
External data bus
CSi
ALE
Address
3
φ
3
φ
RD
BLW,BHW
1 bus cycle = 7
φ
φ1
External address
bus
External data bus
CSi
ALE
Address
4
φ
3
φ
Data
Bus cycle 1
φ + 1φ
Bus cycle 1
φ + 2φ
Bus cycle 1
φ + 3φ
Bus cycle 2
φ + 2φ
Bus cycle 2
φ + 3φ
Bus cycle 2
φ + 4φ
Bus cycle 3
φ + 3φ
Bus cycle 3
φ + 4φ
Notes 1: The bus cycle type is determined by the following bits:
Areas out of area CSi : external bus cycle select bit 0 (bits 2 and 3 at address 5E16)
external bus cycle select bit 1 (bit 0 at address 5F16)
Area CSi
: area CSi bus cycle select bit 0 (bits 0 and 1 at addresses 8016, 8216, 8416, 8616)
area CSi bus cycle select bit 1 (bit 3 at addresses 8116, 8316, 8516, 8716)
2: indicates the bus cycle, where the burst ROM access specification is enabled.
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