tmp87p809ng TOSHIBA Semiconductor CORPORATION, tmp87p809ng Datasheet - Page 3

• Manufacturer Part Number: tmp87p809ng
• Description: Toshiba Original Cmos 8-bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

The following problem is included in the explanation of the I
It will guide the correction as follows. Please read it for the explanation of this data sheet as follows.
Section: “I
TOSHIBA Microcontrollers
870 Family
(TMP87C409BN) (TMP87C409BM) (TMP87C809BN) (TMP87C809BM) （TMP87P809）
▪ In the explanation of the Serial Bus Interface Control Register 1
▪ In “(3) Serial clock”
SCK
1. Delete the setting examples where the serial clock frequency exceeds 100 kHz.
2. Add the following note.
1. Add the following sentence about the communication baud rate.
2
C Bus Mode Control”
Note: This I
a. Clock source
In both master mode and slave mode, a pulse width of at least 4 machine cycles is require
for both “H” and “L” levels.
Serial clock selection
The SCK (bits 2 to 0 in the SBICR1) is used to select a maximum transfer frequency
outputed on the SCL pin in the master mode.
the I
shown below.
t
t
fscl = 1/(t
LOW
HIGH
the I
specification is not guaranteed in that case.
= 2
= 2
2
C bus specification, such as the shortest pulse width of t
n
2
Low
n
C bus circuit itself allows the setting of a baud rate over 100 kbps, the compliance with the I
/f
2
/f
Datasheet Modifications: I
C bus circuit does not support the Fast mode. It supports the Standard mode only. Although
c
c
+ 8/f
+ t
HIGH
c
)
000 :
001 :
010 : 58.8
011 : 30.3
100 : 15.4
101 : 7.75
110 : 3.89
111 : reserved
Reserved
Reserved
2
C Bus Mode Control
kHz
kHz
kHz
kHz
kHz
(Note)
(Note)
2
C bus function of this data sheet.
Set a communication baud rate that meets
at fc = 8MHz (Output on SCL
pin)
LOW,
based on the equations
TMP87P809
2008-02-08
Write-
only
2
C