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Pin Names
Circuit Diagram
P23/SDA1
P24/SCL1
P25/SDA0
P26/SCL0
P27/SYNCI
RD
IICE
SDA/SCL
2
IICE = I
C bus enable signal
PUR27 ·
RD
Pin States
At Reset
Hi-Z
PUR2n ·
PDR2n
IICE
PCR2n
As SDA and SCL always function, a
SDA/SCL
high level or a low level should
always be input to the pins.
n = 3, 4, 5, 6
Hi-Z
PDR27
PCR27
As SYNCI always functions, a high
level or a low level should always be
input to the pin.
SYNCI
Sleep
Mode
Retained Pull-up MOS:
Retained Pull-up MOS:
Rev. 1.0, 02/00, page 1119 of 1141
Power-Down
Modes Other
Than Sleep
Mode
OFF
Subactive mode:
Functions
Other modes:
Hi-Z
OFF
Subactive mode:
Functions
Other modes:
Hi-Z
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