DF2211NP24V Renesas Technology / Hitachi Semiconductor, DF2211NP24V Datasheet - Page 169
DF2211NP24V
Manufacturer Part Number
DF2211NP24V
Description
H8S/2200 Series, 2212 Group, USB, RTC, HSS TNP-64B; Vcc= 2.7 to 3.6 volts, Temp= -20 to 75 C; Package: PVQN0064LB-A
Manufacturer
Renesas Technology / Hitachi Semiconductor
Datasheet
1.DF2211NP24V.pdf
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This LSI has a built-in bus controller (BSC) that manages the external address space divided into
eight areas. The bus controller also has a bus arbitration function, and controls the operation of the
internal bus masters: the CPU and DMA controller (DMAC).
6.1
• Manages external address space in area units
• Basic bus interface*
• Burst ROM interface*
• Idle cycle insertion*
• Bus arbitration
• Other features
Notes: 1. Chip select CS6 in area 6 is for the on-chip USB. Therefore it cannot be used as an
BSCS207A_010020020100
⎯ Manages the external space as 8 areas of 2-Mbytes
⎯ Bus specifications can be set independently for each area
⎯ Burst ROM interface can be set
⎯ Chip select (CS0 to CS5) can be output for areas 0 to 5*
⎯ 8-bit access or 16-bit access can be selected for each area
⎯ 2-state access or 3-state access can be selected for each area
⎯ Program wait states can be inserted for each area
⎯ Burst ROM interface can be selected for area 0
⎯ One or two states can be selected for the burst cycle
⎯ Idle cycle can be inserted between consecutive read accesses to different areas
⎯ Idle cycle can be inserted before a write access to an external area immediately after a read
⎯ The on-chip bus arbiter arbitrates bus mastership among CPU and DMAC
⎯ External bus release function*
access to an external area
2. These functions are not available in the H8S/2212 Group.
Features
external area. 8-bit bus mode, 3-state access, and no program wait state should be set
for area 6. Access to the RTC related registers (address: H'FFFF40 to H'FFFF5F)
follows the specification of area 7. 8-bit access, 3-state access, and no program wait
state should be set for area 7.
1
2
2
Section 6 Bus Controller
2
Rev.7.00 Dec. 24, 2008 Page 115 of 698
2
REJ09B0074-0700
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