UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 888

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

Caution When Value is
Remark F
886
CAN
Peripheral
Hardware
F
F
VPCLK
VPSTB
CANCLK
Global Reg.
CANmodule
Reg.
C0RGPT
C0LIPT
C0TGPT
C0LOPT
Message Buf.
Message Buf.
Message Buf.
:
:
: AFCAN macro frequency
Table 32-2. RAM Access That Generate Wait and Number of CPU Wait Clocks
Register
VPCLK frequency
VPSTB frequency
CANMOD
Read/Write
Read
Write(8 bit)
Write(16 bit)
(CAN module system clock)
Access
CHAPTER 32 CAUTIONS FOR WAIT
Preliminary User’s Manual U19748EJ1V0UD
Number of Wait Clocks
MIN.
1
2
2
1
MAX.
14
17
11
1
2 MHz.
Synchronizaition of NPB signals with VPCLK
<Calculating number of wait clocks>
MIN. ROUNDUP[(1/F
MAX. ROUNDUP[(1/F
Synchronization of NPB signals with VPCLK
RAM access delay (1 RAM – RD access)
<Calculating number of wait clocks>
MIN. ROUNDUP[(1/F
MAX. ROUNDUP[(1/F
Synchronization of NPB signals with VPCLK
RAM access delay (1RAM – RD + 1RAM – WR
access)
<Calculating number of wait clocks>
MIN. ROUNDUP[(1/F
MAX. ROUNDUP[(1/F
Synchronization of NPB signals with VPCLK
RAM access delay (1 RAM – WR access)
<Calculating number of wait clocks>
MIN. ROUNDUP[(1/F
MAX. ROUNDUP[(1/F
Cause
VPCLK
CANCLK
CANCLK
CANCLK
VPCLK
CANCLK
CANCLK
CANCLK
) × 1/(1/F
) × 2/(1/F
) × 3/(1/F
) × 4/(1/F
) × 2/(1/F
) × 4/(1/F
) × 5/(1/F
) × 3/(1/F
VPSTB
VPSTB
VPSTB
VPSTB
VPSTB
VPSTB
VPSTB
VPSTB
)]
)]
)]
)]
)]
)]
)]
)]