upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 104

• Manufacturer Part Number: upd70f3422gj-gae-qs-ax
• Description: 32-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

Chapter 3
104
Bus type
NPB – NEC Peripheral Bus
VSB – V850 System Bus
VFB – V850 Fetch Bus
VDB – V850 Data Bus
Figure 3-1
Table 3-1
3.1.1 Description
The figure below shows a block diagram of the microcontroller, focusing on the
CPU and modules that interact with the CPU directly. Table 3-1 lists the bus
types.
CPU system
The shaded busses are used for accessing the configuration registers of the
concerned modules.
Bus types
Preliminary User’s Manual U17566EE1V2UM00
Function
Bus interface to the peripherals (internal bus).
Bus interface to the Memory Controller for access to external memory, additional
internal memory and to the NPB bus bridge BBR.
Interface to the internal ROM (mask ROM or flash ROM).
Interface to the internal RAM.
V
F
B
V
D
B
Instruction queue
General-purpose
registers
Program counter
System registers
RCU interface
Interrupt control unit
Standby control unit
DMA control unit
(DMAC)
(STBC)
(INTC)
(32 × 32 → 64)
shifter
Barrel
Multiplier
ALU
CPU
NPB
Bus control unit
System controller
(BCU)
Bus bridge
CPU System Functions
(BBR)
V
S
B