saa7240 NXP Semiconductors, saa7240 Datasheet - Page 21

• Manufacturer Part Number: saa7240
• Description: Mpeg-2 Transport Risc Processor
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9.1
Table 4 shows an example of typical current savings when either the Sleep mode or Coma mode is set. The
measurement is carried out on a test board running an application at room temperature with V
current consumption of the SAA7240 is measured with all peripherals enabled; this value is taken as a reference. Then,
the Sleep and Coma modes of the peripherals and CPU are set one at a time to measure the power consumption and
determine the relevant current saving.
Table 4 Typical current consumption for Sleep and Coma modes
Note
1. This is the measured value used to determine the power savings.
9.2
Table 5 shows the maximum load capacitances that are allowed on the output pins. These loads should not be exceeded.
Table 5
2001 Oct 22
SDA0, SCL0, SDA1 and SCL1
D[15:0], A[21:0], LCASN, MLCASN, MUCASN, UCASN, WEN, OEN and
PIO[31:16]/D[31:16]
CLK, MCLK, DSU_CLK and PCST[2:0]
PKTSTROBE, GPDATA[7:0], GPSYNC, GPVALID, GPSTROBE, GPD0/TS_DAT0,
GPD1/TS_SYN0, GPD2/TS_VAL0, GPD3/TS_CK0, GPD4/TS_VAL1,
GPD5/TS_SYN1, GPD6/TS_DAT1, GPD7/TS_CK1, NSELECTIN/TS_DAT2,
NINIT/TS_SYN2, NSTROBE/TS_VAL2 and NACK/CS10N/TS_CK2
All other outputs
CONFIGURATION
MPEG-2 Transport RISC processor
REGISTER
VALUE
Power saving in Sleep and Coma modes
7FFFH
Maximum allowable load capacitance on output pins
0000H
0001H
0002H
0004H
MIPS
Maximum output load capacitances
no shutdown; used for reference
CPU core in Sleep mode and peripherals active
CPU core in Coma mode and peripherals active
peripheral section in Coma mode and CPU active
everything down; including CPU
OUTPUT PIN
PERIPHERAL
21
220
210
208
12
12
(1)
CURRENT (mA)
TYPICAL I
MAXIMUM LOAD
DDC
400
100
25
20
50
DDC
= 2.5 V. First, the total
Product specification
SAA7240
n.a.
10
12
208
208
SAVINGS
(mA)
UNIT
pF
pF
pF
pF
pF