Datasheet
Analog Integrated Circuit Device Data
Freescale Semiconductor 110
MC34708
Functional Block Description
7.9.3 SPI/I
2
C Specification
7.10 Configuration Registers
7.10.1 Register Set structure
The general structure of the register set is given in the following table. Expanded bit descriptions are included in the following
functional sections for application guidance. For brevity’s sake, references are occasionally made herein to the register set as
the “SPI map” or “SPI bits”, but note that bit access is also possible through the I
2
C interface option so such references are
implied as generically applicable to the register set accessible by either interface.
Table 100. SPI/I
2
C Electrical Characteristics
Characteristics noted under conditions BP = 3.6 V, V
BUS
= 5.0 V, - 40 C T
A
85 C, unless otherwise noted. Typical values
at BP = 3.6 V and T
A
= 25 °C under nominal conditions, unless otherwise noted.
Symbol Characteristic Min Typ Max Unit Notes
SPI Interface Logic IO
V
INCSLO
Input Low CS
0.0 - 0.4 V
V
INCSHI
Input High CS
1.1 - SPIVCC+0.3 V
V
INMOSILO
/
V
INCLKLO
Input Low, MOSI, CLK
0.0 - 0.3*SPIVCC V
V
INMOSIHI
/
V
INCLKHI
Input High, MOSI, CLK
0.7*SPIVCC - SPIVCC+0.3 V
V
MISOLO
/
V
INTLO
Output Low MISO, INT
• Output sink 100 A
0.0 - 0.2
V
V
MISOHI
/
V
INTHI
Output High MISO, INT
• Output source 100 A
SPIVCC-0.2 - SPIVCC V
V
CC-SPI
SPIVCC Operating Range
1.75 - 3.6 V
t
MISOET
MISO Rise and Fall Time, CL = 50 pF, SPIVCC = 1.8 V
•SPIDRV [1:0] = 00
•SPIDRV [1:0] = 01 (default)
•SPIDRV [1:0] = 10
•SPIDRV [1:0] = 11
-
-
-
-
6.0
2.5
3.0
2.0
-
-
-
-
ns
Table 101. Register Set
Register Register Register Register
0 Interrupt Status 0 16 Memory A 32 Regulator Mode 0 48 ADC5
1 Interrupt Mask 0 17 Memory B 33 GPIOLV0 Control 49 ADC6
2 Interrupt Sense 0 18 Memory C 34 GPIOLV1 Control 50 ADC7
3 Interrupt Status 1 19 Memory C 35 GPIOLV2 Control 51 Input Monitoring
4 Interrupt Mask 1 20 RTC Time 36 GPIOLV3 Control 52 Supply Debounce
5 Interrupt Sense 1 21 RTC Alarm 37 USB Timing 53 VBUS monitoring
6 Power Up Mode Sense 22 RTC Day 38 USB Button 54 LED Control
7 Identification 23 RTC Day Alarm 39 USB Control 55 PWM Control
8 Regulator Fault Sense 24 Regulator 1 A/B Voltage 40 USB Device Type 56 Unused